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Finding the Fourth Proportional to 66,443.20, 99,737.70 and 36,845.80

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Solution

The fourth proportional to 66,443.20, 99,737.70 and 36,845.80 is: 55,309.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,443.20 : 99,737.70 = 36,845.80 : x
  2. Step 2: Convert to fraction form
    66,443.20/99,737.70 = 36,845.80/x
  3. Step 3: Cross multiply
    66,443.20x = 99,737.70 × 36,845.80
  4. Step 4: Simplify right side
    66,443.20x = 3,674,915,346.66
  5. Step 5: Solve for x
    x = 3,674,915,346.66/66,443.20
  6. Step 6: Final answer
    x = 55,309.13

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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.