Home / 86,374.43-129,269.02-53,115.56

Finding the Fourth Proportional to 86,374.43, 129,269.02 and 53,115.56

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Solution

The fourth proportional to 86,374.43, 129,269.02 and 53,115.56 is: 79,493.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,374.43 : 129,269.02 = 53,115.56 : x
  2. Step 2: Convert to fraction form
    86,374.43/129,269.02 = 53,115.56/x
  3. Step 3: Cross multiply
    86,374.43x = 129,269.02 × 53,115.56
  4. Step 4: Simplify right side
    86,374.43x = 6,866,196,387.95
  5. Step 5: Solve for x
    x = 6,866,196,387.95/86,374.43
  6. Step 6: Final answer
    x = 79,493.39

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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.