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Finding the Fourth Proportional to 81,332.99, 112,239.51 and 45,523

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Solution

The fourth proportional to 81,332.99, 112,239.51 and 45,523 is: 62,821.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,332.99 : 112,239.51 = 45,523 : x
  2. Step 2: Convert to fraction form
    81,332.99/112,239.51 = 45,523/x
  3. Step 3: Cross multiply
    81,332.99x = 112,239.51 × 45,523
  4. Step 4: Simplify right side
    81,332.99x = 5,109,479,213.73
  5. Step 5: Solve for x
    x = 5,109,479,213.73/81,332.99
  6. Step 6: Final answer
    x = 62,821.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.