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Finding the Fourth Proportional to 66,031.60, 99,074.76 and 36,446.80

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Solution

The fourth proportional to 66,031.60, 99,074.76 and 36,446.80 is: 54,685.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,031.60 : 99,074.76 = 36,446.80 : x
  2. Step 2: Convert to fraction form
    66,031.60/99,074.76 = 36,446.80/x
  3. Step 3: Cross multiply
    66,031.60x = 99,074.76 × 36,446.80
  4. Step 4: Simplify right side
    66,031.60x = 3,610,957,962.77
  5. Step 5: Solve for x
    x = 3,610,957,962.77/66,031.60
  6. Step 6: Final answer
    x = 54,685.30

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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.