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Finding the Fourth Proportional to 81,552, 122,345.56 and 25,390.92

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Solution

The fourth proportional to 81,552, 122,345.56 and 25,390.92 is: 38,091.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,552 : 122,345.56 = 25,390.92 : x
  2. Step 2: Convert to fraction form
    81,552/122,345.56 = 25,390.92/x
  3. Step 3: Cross multiply
    81,552x = 122,345.56 × 25,390.92
  4. Step 4: Simplify right side
    81,552x = 3,106,466,326.32
  5. Step 5: Solve for x
    x = 3,106,466,326.32/81,552
  6. Step 6: Final answer
    x = 38,091.85

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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.