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Finding the Fourth Proportional to 65,718.13, 90,691.02 and 35,910.13

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Solution

The fourth proportional to 65,718.13, 90,691.02 and 35,910.13 is: 49,555.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,718.13 : 90,691.02 = 35,910.13 : x
  2. Step 2: Convert to fraction form
    65,718.13/90,691.02 = 35,910.13/x
  3. Step 3: Cross multiply
    65,718.13x = 90,691.02 × 35,910.13
  4. Step 4: Simplify right side
    65,718.13x = 3,256,726,318.03
  5. Step 5: Solve for x
    x = 3,256,726,318.03/65,718.13
  6. Step 6: Final answer
    x = 49,555.98

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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.