Home / 65,742.13-90,718.64-36,668.70

Finding the Fourth Proportional to 65,742.13, 90,718.64 and 36,668.70

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Solution

The fourth proportional to 65,742.13, 90,718.64 and 36,668.70 is: 50,599.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,742.13 : 90,718.64 = 36,668.70 : x
  2. Step 2: Convert to fraction form
    65,742.13/90,718.64 = 36,668.70/x
  3. Step 3: Cross multiply
    65,742.13x = 90,718.64 × 36,668.70
  4. Step 4: Simplify right side
    65,742.13x = 3,326,534,140.97
  5. Step 5: Solve for x
    x = 3,326,534,140.97/65,742.13
  6. Step 6: Final answer
    x = 50,599.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.