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Finding the Fourth Proportional to 70,179.60, 96,853.37 and 39,966.20

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Solution

The fourth proportional to 70,179.60, 96,853.37 and 39,966.20 is: 55,156.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,179.60 : 96,853.37 = 39,966.20 : x
  2. Step 2: Convert to fraction form
    70,179.60/96,853.37 = 39,966.20/x
  3. Step 3: Cross multiply
    70,179.60x = 96,853.37 × 39,966.20
  4. Step 4: Simplify right side
    70,179.60x = 3,870,860,472.00
  5. Step 5: Solve for x
    x = 3,870,860,472.00/70,179.60
  6. Step 6: Final answer
    x = 55,156.49

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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.