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Finding the Fourth Proportional to 80,038.78, 120,053.84 and 40,594.87

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Solution

The fourth proportional to 80,038.78, 120,053.84 and 40,594.87 is: 60,890.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,038.78 : 120,053.84 = 40,594.87 : x
  2. Step 2: Convert to fraction form
    80,038.78/120,053.84 = 40,594.87/x
  3. Step 3: Cross multiply
    80,038.78x = 120,053.84 × 40,594.87
  4. Step 4: Simplify right side
    80,038.78x = 4,873,569,224.56
  5. Step 5: Solve for x
    x = 4,873,569,224.56/80,038.78
  6. Step 6: Final answer
    x = 60,890.10

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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.