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Finding the Fourth Proportional to 60,475.88, 90,722.78 and 18,917.48

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Solution

The fourth proportional to 60,475.88, 90,722.78 and 18,917.48 is: 28,379.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,475.88 : 90,722.78 = 18,917.48 : x
  2. Step 2: Convert to fraction form
    60,475.88/90,722.78 = 18,917.48/x
  3. Step 3: Cross multiply
    60,475.88x = 90,722.78 × 18,917.48
  4. Step 4: Simplify right side
    60,475.88x = 1,716,246,376.19
  5. Step 5: Solve for x
    x = 1,716,246,376.19/60,475.88
  6. Step 6: Final answer
    x = 28,379.02

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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.