Home / 86,339.52-129,418.56-39,553.92

Finding the Fourth Proportional to 86,339.52, 129,418.56 and 39,553.92

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Solution

The fourth proportional to 86,339.52, 129,418.56 and 39,553.92 is: 59,289.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,339.52 : 129,418.56 = 39,553.92 : x
  2. Step 2: Convert to fraction form
    86,339.52/129,418.56 = 39,553.92/x
  3. Step 3: Cross multiply
    86,339.52x = 129,418.56 × 39,553.92
  4. Step 4: Simplify right side
    86,339.52x = 5,119,011,368.76
  5. Step 5: Solve for x
    x = 5,119,011,368.76/86,339.52
  6. Step 6: Final answer
    x = 59,289.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.