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Finding the Fourth Proportional to 64,761.92, 89,352.84 and 40,896.32

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Solution

The fourth proportional to 64,761.92, 89,352.84 and 40,896.32 is: 56,425.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,761.92 : 89,352.84 = 40,896.32 : x
  2. Step 2: Convert to fraction form
    64,761.92/89,352.84 = 40,896.32/x
  3. Step 3: Cross multiply
    64,761.92x = 89,352.84 × 40,896.32
  4. Step 4: Simplify right side
    64,761.92x = 3,654,202,337.55
  5. Step 5: Solve for x
    x = 3,654,202,337.55/64,761.92
  6. Step 6: Final answer
    x = 56,425.17

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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.