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Finding the Fourth Proportional to 65,202.20, 90,000.42 and 38,343.42

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Solution

The fourth proportional to 65,202.20, 90,000.42 and 38,343.42 is: 52,926.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,202.20 : 90,000.42 = 38,343.42 : x
  2. Step 2: Convert to fraction form
    65,202.20/90,000.42 = 38,343.42/x
  3. Step 3: Cross multiply
    65,202.20x = 90,000.42 × 38,343.42
  4. Step 4: Simplify right side
    65,202.20x = 3,450,923,904.24
  5. Step 5: Solve for x
    x = 3,450,923,904.24/65,202.20
  6. Step 6: Final answer
    x = 52,926.49

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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.