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Finding the Fourth Proportional to 88,182.56, 121,731.72 and 56,394.32

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Solution

The fourth proportional to 88,182.56, 121,731.72 and 56,394.32 is: 77,849.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,182.56 : 121,731.72 = 56,394.32 : x
  2. Step 2: Convert to fraction form
    88,182.56/121,731.72 = 56,394.32/x
  3. Step 3: Cross multiply
    88,182.56x = 121,731.72 × 56,394.32
  4. Step 4: Simplify right side
    88,182.56x = 6,864,977,571.83
  5. Step 5: Solve for x
    x = 6,864,977,571.83/88,182.56
  6. Step 6: Final answer
    x = 77,849.61

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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.