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Finding the Fourth Proportional to 65,404.62, 90,267.54 and 38,189.61

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Solution

The fourth proportional to 65,404.62, 90,267.54 and 38,189.61 is: 52,707.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,404.62 : 90,267.54 = 38,189.61 : x
  2. Step 2: Convert to fraction form
    65,404.62/90,267.54 = 38,189.61/x
  3. Step 3: Cross multiply
    65,404.62x = 90,267.54 × 38,189.61
  4. Step 4: Simplify right side
    65,404.62x = 3,447,281,505.97
  5. Step 5: Solve for x
    x = 3,447,281,505.97/65,404.62
  6. Step 6: Final answer
    x = 52,707.01

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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.