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Finding the Fourth Proportional to 81,737.55, 112,801.14 and 45,927.45

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Solution

The fourth proportional to 81,737.55, 112,801.14 and 45,927.45 is: 63,381.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,737.55 : 112,801.14 = 45,927.45 : x
  2. Step 2: Convert to fraction form
    81,737.55/112,801.14 = 45,927.45/x
  3. Step 3: Cross multiply
    81,737.55x = 112,801.14 × 45,927.45
  4. Step 4: Simplify right side
    81,737.55x = 5,180,668,717.29
  5. Step 5: Solve for x
    x = 5,180,668,717.29/81,737.55
  6. Step 6: Final answer
    x = 63,381.75

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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.