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Finding the Fourth Proportional to 88,147, 121,642.86 and 48,403

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Solution

The fourth proportional to 88,147, 121,642.86 and 48,403 is: 66,796.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,147 : 121,642.86 = 48,403 : x
  2. Step 2: Convert to fraction form
    88,147/121,642.86 = 48,403/x
  3. Step 3: Cross multiply
    88,147x = 121,642.86 × 48,403
  4. Step 4: Simplify right side
    88,147x = 5,887,879,352.58
  5. Step 5: Solve for x
    x = 5,887,879,352.58/88,147
  6. Step 6: Final answer
    x = 66,796.14

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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.