Home / 88,101.61-121,581.12-47,815.72

Finding the Fourth Proportional to 88,101.61, 121,581.12 and 47,815.72

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Solution

The fourth proportional to 88,101.61, 121,581.12 and 47,815.72 is: 65,986.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,101.61 : 121,581.12 = 47,815.72 : x
  2. Step 2: Convert to fraction form
    88,101.61/121,581.12 = 47,815.72/x
  3. Step 3: Cross multiply
    88,101.61x = 121,581.12 × 47,815.72
  4. Step 4: Simplify right side
    88,101.61x = 5,813,488,791.21
  5. Step 5: Solve for x
    x = 5,813,488,791.21/88,101.61
  6. Step 6: Final answer
    x = 65,986.18

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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.