Home / 48,630.30-72,945.45-31,119.90

Finding the Fourth Proportional to 48,630.30, 72,945.45 and 31,119.90

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Solution

The fourth proportional to 48,630.30, 72,945.45 and 31,119.90 is: 46,679.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,630.30 : 72,945.45 = 31,119.90 : x
  2. Step 2: Convert to fraction form
    48,630.30/72,945.45 = 31,119.90/x
  3. Step 3: Cross multiply
    48,630.30x = 72,945.45 × 31,119.90
  4. Step 4: Simplify right side
    48,630.30x = 2,270,055,109.46
  5. Step 5: Solve for x
    x = 2,270,055,109.46/48,630.30
  6. Step 6: Final answer
    x = 46,679.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.