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Finding the Fourth Proportional to 60,734.60, 91,016.26 and 28,679.47

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Solution

The fourth proportional to 60,734.60, 91,016.26 and 28,679.47 is: 42,978.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,734.60 : 91,016.26 = 28,679.47 : x
  2. Step 2: Convert to fraction form
    60,734.60/91,016.26 = 28,679.47/x
  3. Step 3: Cross multiply
    60,734.60x = 91,016.26 × 28,679.47
  4. Step 4: Simplify right side
    60,734.60x = 2,610,297,798.94
  5. Step 5: Solve for x
    x = 2,610,297,798.94/60,734.60
  6. Step 6: Final answer
    x = 42,978.76

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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.