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Finding the Fourth Proportional to 79,657.97, 109,915.14 and 45,660.20

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Solution

The fourth proportional to 79,657.97, 109,915.14 and 45,660.20 is: 63,003.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,657.97 : 109,915.14 = 45,660.20 : x
  2. Step 2: Convert to fraction form
    79,657.97/109,915.14 = 45,660.20/x
  3. Step 3: Cross multiply
    79,657.97x = 109,915.14 × 45,660.20
  4. Step 4: Simplify right side
    79,657.97x = 5,018,747,799.11
  5. Step 5: Solve for x
    x = 5,018,747,799.11/79,657.97
  6. Step 6: Final answer
    x = 63,003.71

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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.