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Finding the Fourth Proportional to 72,600.75, 108,905.23 and 25,853.63

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Solution

The fourth proportional to 72,600.75, 108,905.23 and 25,853.63 is: 38,781.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,600.75 : 108,905.23 = 25,853.63 : x
  2. Step 2: Convert to fraction form
    72,600.75/108,905.23 = 25,853.63/x
  3. Step 3: Cross multiply
    72,600.75x = 108,905.23 × 25,853.63
  4. Step 4: Simplify right side
    72,600.75x = 2,815,595,521.48
  5. Step 5: Solve for x
    x = 2,815,595,521.48/72,600.75
  6. Step 6: Final answer
    x = 38,781.91

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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.