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Finding the Fourth Proportional to 60,740.70, 91,071.45 and 54,519.90

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Solution

The fourth proportional to 60,740.70, 91,071.45 and 54,519.90 is: 81,744.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,740.70 : 91,071.45 = 54,519.90 : x
  2. Step 2: Convert to fraction form
    60,740.70/91,071.45 = 54,519.90/x
  3. Step 3: Cross multiply
    60,740.70x = 91,071.45 × 54,519.90
  4. Step 4: Simplify right side
    60,740.70x = 4,965,206,346.86
  5. Step 5: Solve for x
    x = 4,965,206,346.86/60,740.70
  6. Step 6: Final answer
    x = 81,744.31

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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.