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Finding the Fourth Proportional to 83,602.92, 125,403.54 and 21,272.76

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Solution

The fourth proportional to 83,602.92, 125,403.54 and 21,272.76 is: 31,908.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,602.92 : 125,403.54 = 21,272.76 : x
  2. Step 2: Convert to fraction form
    83,602.92/125,403.54 = 21,272.76/x
  3. Step 3: Cross multiply
    83,602.92x = 125,403.54 × 21,272.76
  4. Step 4: Simplify right side
    83,602.92x = 2,667,679,409.57
  5. Step 5: Solve for x
    x = 2,667,679,409.57/83,602.92
  6. Step 6: Final answer
    x = 31,908.93

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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.