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Finding the Fourth Proportional to 72,264.35, 99,753.77 and 47,731.61

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Solution

The fourth proportional to 72,264.35, 99,753.77 and 47,731.61 is: 65,888.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,264.35 : 99,753.77 = 47,731.61 : x
  2. Step 2: Convert to fraction form
    72,264.35/99,753.77 = 47,731.61/x
  3. Step 3: Cross multiply
    72,264.35x = 99,753.77 × 47,731.61
  4. Step 4: Simplify right side
    72,264.35x = 4,761,407,666.23
  5. Step 5: Solve for x
    x = 4,761,407,666.23/72,264.35
  6. Step 6: Final answer
    x = 65,888.75

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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.