Home / 81,587.79-122,387.61-34,155.18

Finding the Fourth Proportional to 81,587.79, 122,387.61 and 34,155.18

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Solution

The fourth proportional to 81,587.79, 122,387.61 and 34,155.18 is: 51,235.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,587.79 : 122,387.61 = 34,155.18 : x
  2. Step 2: Convert to fraction form
    81,587.79/122,387.61 = 34,155.18/x
  3. Step 3: Cross multiply
    81,587.79x = 122,387.61 × 34,155.18
  4. Step 4: Simplify right side
    81,587.79x = 4,180,170,849.32
  5. Step 5: Solve for x
    x = 4,180,170,849.32/81,587.79
  6. Step 6: Final answer
    x = 51,235.25

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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.