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Finding the Fourth Proportional to 60,770.16, 91,154.48 and 20,788.74

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Solution

The fourth proportional to 60,770.16, 91,154.48 and 20,788.74 is: 31,182.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,770.16 : 91,154.48 = 20,788.74 : x
  2. Step 2: Convert to fraction form
    60,770.16/91,154.48 = 20,788.74/x
  3. Step 3: Cross multiply
    60,770.16x = 91,154.48 × 20,788.74
  4. Step 4: Simplify right side
    60,770.16x = 1,894,986,680.61
  5. Step 5: Solve for x
    x = 1,894,986,680.61/60,770.16
  6. Step 6: Final answer
    x = 31,182.85

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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.