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Finding the Fourth Proportional to 81,551.59, 112,526.95 and 45,743.11

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Solution

The fourth proportional to 81,551.59, 112,526.95 and 45,743.11 is: 63,117.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,551.59 : 112,526.95 = 45,743.11 : x
  2. Step 2: Convert to fraction form
    81,551.59/112,526.95 = 45,743.11/x
  3. Step 3: Cross multiply
    81,551.59x = 112,526.95 × 45,743.11
  4. Step 4: Simplify right side
    81,551.59x = 5,147,332,651.81
  5. Step 5: Solve for x
    x = 5,147,332,651.81/81,551.59
  6. Step 6: Final answer
    x = 63,117.50

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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.