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Finding the Fourth Proportional to 60,245.89, 90,246.12 and 28,559.91

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Solution

The fourth proportional to 60,245.89, 90,246.12 and 28,559.91 is: 42,781.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,245.89 : 90,246.12 = 28,559.91 : x
  2. Step 2: Convert to fraction form
    60,245.89/90,246.12 = 28,559.91/x
  3. Step 3: Cross multiply
    60,245.89x = 90,246.12 × 28,559.91
  4. Step 4: Simplify right side
    60,245.89x = 2,577,421,065.05
  5. Step 5: Solve for x
    x = 2,577,421,065.05/60,245.89
  6. Step 6: Final answer
    x = 42,781.69

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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.