Home / 81,387.28-122,064.48-56,652.31

Finding the Fourth Proportional to 81,387.28, 122,064.48 and 56,652.31

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Solution

The fourth proportional to 81,387.28, 122,064.48 and 56,652.31 is: 84,967.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,387.28 : 122,064.48 = 56,652.31 : x
  2. Step 2: Convert to fraction form
    81,387.28/122,064.48 = 56,652.31/x
  3. Step 3: Cross multiply
    81,387.28x = 122,064.48 × 56,652.31
  4. Step 4: Simplify right side
    81,387.28x = 6,915,234,760.95
  5. Step 5: Solve for x
    x = 6,915,234,760.95/81,387.28
  6. Step 6: Final answer
    x = 84,967.02

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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.