Home / 88,155.72-121,654.80-47,869.20

Finding the Fourth Proportional to 88,155.72, 121,654.80 and 47,869.20

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Solution

The fourth proportional to 88,155.72, 121,654.80 and 47,869.20 is: 66,059.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,155.72 : 121,654.80 = 47,869.20 : x
  2. Step 2: Convert to fraction form
    88,155.72/121,654.80 = 47,869.20/x
  3. Step 3: Cross multiply
    88,155.72x = 121,654.80 × 47,869.20
  4. Step 4: Simplify right side
    88,155.72x = 5,823,517,952.16
  5. Step 5: Solve for x
    x = 5,823,517,952.16/88,155.72
  6. Step 6: Final answer
    x = 66,059.45

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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.