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Finding the Fourth Proportional to 112,456.39, 155,193.41 and 61,468

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Solution

The fourth proportional to 112,456.39, 155,193.41 and 61,468 is: 84,827.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,456.39 : 155,193.41 = 61,468 : x
  2. Step 2: Convert to fraction form
    112,456.39/155,193.41 = 61,468/x
  3. Step 3: Cross multiply
    112,456.39x = 155,193.41 × 61,468
  4. Step 4: Simplify right side
    112,456.39x = 9,539,428,525.88
  5. Step 5: Solve for x
    x = 9,539,428,525.88/112,456.39
  6. Step 6: Final answer
    x = 84,827.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.