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Finding the Fourth Proportional to 87,774.79, 121,129.22 and 47,488.53

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Solution

The fourth proportional to 87,774.79, 121,129.22 and 47,488.53 is: 65,534.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,774.79 : 121,129.22 = 47,488.53 : x
  2. Step 2: Convert to fraction form
    87,774.79/121,129.22 = 47,488.53/x
  3. Step 3: Cross multiply
    87,774.79x = 121,129.22 × 47,488.53
  4. Step 4: Simplify right side
    87,774.79x = 5,752,248,597.85
  5. Step 5: Solve for x
    x = 5,752,248,597.85/87,774.79
  6. Step 6: Final answer
    x = 65,534.18

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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.