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Finding the Fourth Proportional to 81,373.52, 112,289.80 and 54,511.68

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Solution

The fourth proportional to 81,373.52, 112,289.80 and 54,511.68 is: 75,222.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,373.52 : 112,289.80 = 54,511.68 : x
  2. Step 2: Convert to fraction form
    81,373.52/112,289.80 = 54,511.68/x
  3. Step 3: Cross multiply
    81,373.52x = 112,289.80 × 54,511.68
  4. Step 4: Simplify right side
    81,373.52x = 6,121,105,644.86
  5. Step 5: Solve for x
    x = 6,121,105,644.86/81,373.52
  6. Step 6: Final answer
    x = 75,222.33

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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.