Home / 55,146.97-76,116.34-31,287.61

Finding the Fourth Proportional to 55,146.97, 76,116.34 and 31,287.61

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Solution

The fourth proportional to 55,146.97, 76,116.34 and 31,287.61 is: 43,184.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,146.97 : 76,116.34 = 31,287.61 : x
  2. Step 2: Convert to fraction form
    55,146.97/76,116.34 = 31,287.61/x
  3. Step 3: Cross multiply
    55,146.97x = 76,116.34 × 31,287.61
  4. Step 4: Simplify right side
    55,146.97x = 2,381,498,360.55
  5. Step 5: Solve for x
    x = 2,381,498,360.55/55,146.97
  6. Step 6: Final answer
    x = 43,184.57

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1.5x scale

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.