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Finding the Fourth Proportional to 87,472.88, 120,712.96 and 49,746.32

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Solution

The fourth proportional to 87,472.88, 120,712.96 and 49,746.32 is: 68,650.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,472.88 : 120,712.96 = 49,746.32 : x
  2. Step 2: Convert to fraction form
    87,472.88/120,712.96 = 49,746.32/x
  3. Step 3: Cross multiply
    87,472.88x = 120,712.96 × 49,746.32
  4. Step 4: Simplify right side
    87,472.88x = 6,005,025,536.31
  5. Step 5: Solve for x
    x = 6,005,025,536.31/87,472.88
  6. Step 6: Final answer
    x = 68,650.14

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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.