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Finding the Fourth Proportional to 60,301.71, 90,388.75 and 20,282.60

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Solution

The fourth proportional to 60,301.71, 90,388.75 and 20,282.60 is: 30,402.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,301.71 : 90,388.75 = 20,282.60 : x
  2. Step 2: Convert to fraction form
    60,301.71/90,388.75 = 20,282.60/x
  3. Step 3: Cross multiply
    60,301.71x = 90,388.75 × 20,282.60
  4. Step 4: Simplify right side
    60,301.71x = 1,833,318,860.75
  5. Step 5: Solve for x
    x = 1,833,318,860.75/60,301.71
  6. Step 6: Final answer
    x = 30,402.44

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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.