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Finding the Fourth Proportional to 88,091.78, 121,567.54 and 47,805.89

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Solution

The fourth proportional to 88,091.78, 121,567.54 and 47,805.89 is: 65,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,091.78 : 121,567.54 = 47,805.89 : x
  2. Step 2: Convert to fraction form
    88,091.78/121,567.54 = 47,805.89/x
  3. Step 3: Cross multiply
    88,091.78x = 121,567.54 × 47,805.89
  4. Step 4: Simplify right side
    88,091.78x = 5,811,643,836.97
  5. Step 5: Solve for x
    x = 5,811,643,836.97/88,091.78
  6. Step 6: Final answer
    x = 65,972.60

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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.