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Finding the Fourth Proportional to 88,400.55, 121,995.38 and 48,116.93

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Solution

The fourth proportional to 88,400.55, 121,995.38 and 48,116.93 is: 66,402.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,400.55 : 121,995.38 = 48,116.93 : x
  2. Step 2: Convert to fraction form
    88,400.55/121,995.38 = 48,116.93/x
  3. Step 3: Cross multiply
    88,400.55x = 121,995.38 × 48,116.93
  4. Step 4: Simplify right side
    88,400.55x = 5,870,042,919.20
  5. Step 5: Solve for x
    x = 5,870,042,919.20/88,400.55
  6. Step 6: Final answer
    x = 66,402.79

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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.