Home / 81,710.30-122,521.70-34,937.66

Finding the Fourth Proportional to 81,710.30, 122,521.70 and 34,937.66

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Solution

The fourth proportional to 81,710.30, 122,521.70 and 34,937.66 is: 52,387.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,710.30 : 122,521.70 = 34,937.66 : x
  2. Step 2: Convert to fraction form
    81,710.30/122,521.70 = 34,937.66/x
  3. Step 3: Cross multiply
    81,710.30x = 122,521.70 × 34,937.66
  4. Step 4: Simplify right side
    81,710.30x = 4,280,620,709.93
  5. Step 5: Solve for x
    x = 4,280,620,709.93/81,710.30
  6. Step 6: Final answer
    x = 52,387.78

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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.