Home / 84,617.18-126,934.20-31,323.40

Finding the Fourth Proportional to 84,617.18, 126,934.20 and 31,323.40

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Solution

The fourth proportional to 84,617.18, 126,934.20 and 31,323.40 is: 46,988.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,617.18 : 126,934.20 = 31,323.40 : x
  2. Step 2: Convert to fraction form
    84,617.18/126,934.20 = 31,323.40/x
  3. Step 3: Cross multiply
    84,617.18x = 126,934.20 × 31,323.40
  4. Step 4: Simplify right side
    84,617.18x = 3,976,010,720.28
  5. Step 5: Solve for x
    x = 3,976,010,720.28/84,617.18
  6. Step 6: Final answer
    x = 46,988.22

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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.