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Finding the Fourth Proportional to 70,533, 96,631.29 and 67,876.20

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Solution

The fourth proportional to 70,533, 96,631.29 and 67,876.20 is: 92,991.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,533 : 96,631.29 = 67,876.20 : x
  2. Step 2: Convert to fraction form
    70,533/96,631.29 = 67,876.20/x
  3. Step 3: Cross multiply
    70,533x = 96,631.29 × 67,876.20
  4. Step 4: Simplify right side
    70,533x = 6,558,964,766.30
  5. Step 5: Solve for x
    x = 6,558,964,766.30/70,533
  6. Step 6: Final answer
    x = 92,991.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.