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Finding the Fourth Proportional to 71,633.15, 107,442.13 and 19,047.95

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Solution

The fourth proportional to 71,633.15, 107,442.13 and 19,047.95 is: 28,569.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,633.15 : 107,442.13 = 19,047.95 : x
  2. Step 2: Convert to fraction form
    71,633.15/107,442.13 = 19,047.95/x
  3. Step 3: Cross multiply
    71,633.15x = 107,442.13 × 19,047.95
  4. Step 4: Simplify right side
    71,633.15x = 2,046,552,320.13
  5. Step 5: Solve for x
    x = 2,046,552,320.13/71,633.15
  6. Step 6: Final answer
    x = 28,569.91

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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.