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Finding the Fourth Proportional to 83,951.78, 125,313.46 and 73,987.58

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Solution

The fourth proportional to 83,951.78, 125,313.46 and 73,987.58 is: 110,440.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,951.78 : 125,313.46 = 73,987.58 : x
  2. Step 2: Convert to fraction form
    83,951.78/125,313.46 = 73,987.58/x
  3. Step 3: Cross multiply
    83,951.78x = 125,313.46 × 73,987.58
  4. Step 4: Simplify right side
    83,951.78x = 9,271,639,646.83
  5. Step 5: Solve for x
    x = 9,271,639,646.83/83,951.78
  6. Step 6: Final answer
    x = 110,440.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.