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Finding the Fourth Proportional to 66,380.48, 91,605.12 and 36,572.48

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Solution

The fourth proportional to 66,380.48, 91,605.12 and 36,572.48 is: 50,470.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,380.48 : 91,605.12 = 36,572.48 : x
  2. Step 2: Convert to fraction form
    66,380.48/91,605.12 = 36,572.48/x
  3. Step 3: Cross multiply
    66,380.48x = 91,605.12 × 36,572.48
  4. Step 4: Simplify right side
    66,380.48x = 3,350,226,419.10
  5. Step 5: Solve for x
    x = 3,350,226,419.10/66,380.48
  6. Step 6: Final answer
    x = 50,470.05

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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.