Home / 65,742.10-98,613.15-18,999.70

Finding the Fourth Proportional to 65,742.10, 98,613.15 and 18,999.70

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Solution

The fourth proportional to 65,742.10, 98,613.15 and 18,999.70 is: 28,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,742.10 : 98,613.15 = 18,999.70 : x
  2. Step 2: Convert to fraction form
    65,742.10/98,613.15 = 18,999.70/x
  3. Step 3: Cross multiply
    65,742.10x = 98,613.15 × 18,999.70
  4. Step 4: Simplify right side
    65,742.10x = 1,873,620,266.06
  5. Step 5: Solve for x
    x = 1,873,620,266.06/65,742.10
  6. Step 6: Final answer
    x = 28,499.55

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Half scale
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Double scale
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Similar ratio
Find fourth proportional to 98,613.15, 147,919.73 and 28,499.55
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.