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Finding the Fourth Proportional to 81,897.59, 122,849.87 and 28,594.92

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Solution

The fourth proportional to 81,897.59, 122,849.87 and 28,594.92 is: 42,893.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,897.59 : 122,849.87 = 28,594.92 : x
  2. Step 2: Convert to fraction form
    81,897.59/122,849.87 = 28,594.92/x
  3. Step 3: Cross multiply
    81,897.59x = 122,849.87 × 28,594.92
  4. Step 4: Simplify right side
    81,897.59x = 3,512,882,061.69
  5. Step 5: Solve for x
    x = 3,512,882,061.69/81,897.59
  6. Step 6: Final answer
    x = 42,893.60

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1.5x scale

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.