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Finding the Fourth Proportional to 88,618.80, 122,224.84 and 56,790.66

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Solution

The fourth proportional to 88,618.80, 122,224.84 and 56,790.66 is: 78,326.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,618.80 : 122,224.84 = 56,790.66 : x
  2. Step 2: Convert to fraction form
    88,618.80/122,224.84 = 56,790.66/x
  3. Step 3: Cross multiply
    88,618.80x = 122,224.84 × 56,790.66
  4. Step 4: Simplify right side
    88,618.80x = 6,941,229,331.99
  5. Step 5: Solve for x
    x = 6,941,229,331.99/88,618.80
  6. Step 6: Final answer
    x = 78,326.83

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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.