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Finding the Fourth Proportional to 87,472.30, 120,708.30 and 51,673.82

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Solution

The fourth proportional to 87,472.30, 120,708.30 and 51,673.82 is: 71,307.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,472.30 : 120,708.30 = 51,673.82 : x
  2. Step 2: Convert to fraction form
    87,472.30/120,708.30 = 51,673.82/x
  3. Step 3: Cross multiply
    87,472.30x = 120,708.30 × 51,673.82
  4. Step 4: Simplify right side
    87,472.30x = 6,237,458,966.71
  5. Step 5: Solve for x
    x = 6,237,458,966.71/87,472.30
  6. Step 6: Final answer
    x = 71,307.82

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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.