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Finding the Fourth Proportional to 65,800.92, 90,763.47 and 43,141.38

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Solution

The fourth proportional to 65,800.92, 90,763.47 and 43,141.38 is: 59,507.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,800.92 : 90,763.47 = 43,141.38 : x
  2. Step 2: Convert to fraction form
    65,800.92/90,763.47 = 43,141.38/x
  3. Step 3: Cross multiply
    65,800.92x = 90,763.47 × 43,141.38
  4. Step 4: Simplify right side
    65,800.92x = 3,915,661,133.68
  5. Step 5: Solve for x
    x = 3,915,661,133.68/65,800.92
  6. Step 6: Final answer
    x = 59,507.70

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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.