Home / 74,074.13-111,111.20-18,670.13

Finding the Fourth Proportional to 74,074.13, 111,111.20 and 18,670.13

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Solution

The fourth proportional to 74,074.13, 111,111.20 and 18,670.13 is: 28,005.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,074.13 : 111,111.20 = 18,670.13 : x
  2. Step 2: Convert to fraction form
    74,074.13/111,111.20 = 18,670.13/x
  3. Step 3: Cross multiply
    74,074.13x = 111,111.20 × 18,670.13
  4. Step 4: Simplify right side
    74,074.13x = 2,074,459,899.55
  5. Step 5: Solve for x
    x = 2,074,459,899.55/74,074.13
  6. Step 6: Final answer
    x = 28,005.19

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Double scale
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Similar ratio
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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.