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Finding the Fourth Proportional to 100,612.07, 150,891.11 and 47,916.71

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Solution

The fourth proportional to 100,612.07, 150,891.11 and 47,916.71 is: 71,862.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,612.07 : 150,891.11 = 47,916.71 : x
  2. Step 2: Convert to fraction form
    100,612.07/150,891.11 = 47,916.71/x
  3. Step 3: Cross multiply
    100,612.07x = 150,891.11 × 47,916.71
  4. Step 4: Simplify right side
    100,612.07x = 7,230,205,319.86
  5. Step 5: Solve for x
    x = 7,230,205,319.86/100,612.07
  6. Step 6: Final answer
    x = 71,862.21

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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.