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Finding the Fourth Proportional to 70,891.74, 106,337.70 and 66,561.48

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Solution

The fourth proportional to 70,891.74, 106,337.70 and 66,561.48 is: 99,842.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,891.74 : 106,337.70 = 66,561.48 : x
  2. Step 2: Convert to fraction form
    70,891.74/106,337.70 = 66,561.48/x
  3. Step 3: Cross multiply
    70,891.74x = 106,337.70 × 66,561.48
  4. Step 4: Simplify right side
    70,891.74x = 7,077,994,691.80
  5. Step 5: Solve for x
    x = 7,077,994,691.80/70,891.74
  6. Step 6: Final answer
    x = 99,842.30

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1.5x scale

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.