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Finding the Fourth Proportional to 88,008.66, 121,458.86 and 74,321.28

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Solution

The fourth proportional to 88,008.66, 121,458.86 and 74,321.28 is: 102,569.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,008.66 : 121,458.86 = 74,321.28 : x
  2. Step 2: Convert to fraction form
    88,008.66/121,458.86 = 74,321.28/x
  3. Step 3: Cross multiply
    88,008.66x = 121,458.86 × 74,321.28
  4. Step 4: Simplify right side
    88,008.66x = 9,026,977,849.64
  5. Step 5: Solve for x
    x = 9,026,977,849.64/88,008.66
  6. Step 6: Final answer
    x = 102,569.20

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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.