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Finding the Fourth Proportional to 83,130.60, 124,671.60 and 29,816.40

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Solution

The fourth proportional to 83,130.60, 124,671.60 and 29,816.40 is: 44,715.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,130.60 : 124,671.60 = 29,816.40 : x
  2. Step 2: Convert to fraction form
    83,130.60/124,671.60 = 29,816.40/x
  3. Step 3: Cross multiply
    83,130.60x = 124,671.60 × 29,816.40
  4. Step 4: Simplify right side
    83,130.60x = 3,717,258,294.24
  5. Step 5: Solve for x
    x = 3,717,258,294.24/83,130.60
  6. Step 6: Final answer
    x = 44,715.88

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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.