Home / 55,278.98-76,285.02-31,405.70

Finding the Fourth Proportional to 55,278.98, 76,285.02 and 31,405.70

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Solution

The fourth proportional to 55,278.98, 76,285.02 and 31,405.70 is: 43,339.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,278.98 : 76,285.02 = 31,405.70 : x
  2. Step 2: Convert to fraction form
    55,278.98/76,285.02 = 31,405.70/x
  3. Step 3: Cross multiply
    55,278.98x = 76,285.02 × 31,405.70
  4. Step 4: Simplify right side
    55,278.98x = 2,395,784,452.61
  5. Step 5: Solve for x
    x = 2,395,784,452.61/55,278.98
  6. Step 6: Final answer
    x = 43,339.88

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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.