Home / 83,977.40-125,966.10-75,812.60

Finding the Fourth Proportional to 83,977.40, 125,966.10 and 75,812.60

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Solution

The fourth proportional to 83,977.40, 125,966.10 and 75,812.60 is: 113,718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,977.40 : 125,966.10 = 75,812.60 : x
  2. Step 2: Convert to fraction form
    83,977.40/125,966.10 = 75,812.60/x
  3. Step 3: Cross multiply
    83,977.40x = 125,966.10 × 75,812.60
  4. Step 4: Simplify right side
    83,977.40x = 9,549,817,552.86
  5. Step 5: Solve for x
    x = 9,549,817,552.86/83,977.40
  6. Step 6: Final answer
    x = 113,718.90

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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.