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Finding the Fourth Proportional to 80,712.46, 121,088.10 and 25,308.46

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Solution

The fourth proportional to 80,712.46, 121,088.10 and 25,308.46 is: 37,968.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,712.46 : 121,088.10 = 25,308.46 : x
  2. Step 2: Convert to fraction form
    80,712.46/121,088.10 = 25,308.46/x
  3. Step 3: Cross multiply
    80,712.46x = 121,088.10 × 25,308.46
  4. Step 4: Simplify right side
    80,712.46x = 3,064,553,335.33
  5. Step 5: Solve for x
    x = 3,064,553,335.33/80,712.46
  6. Step 6: Final answer
    x = 37,968.78

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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.