Home / 55,385.30-76,432.52-31,511.46

Finding the Fourth Proportional to 55,385.30, 76,432.52 and 31,511.46

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Solution

The fourth proportional to 55,385.30, 76,432.52 and 31,511.46 is: 43,486.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,385.30 : 76,432.52 = 31,511.46 : x
  2. Step 2: Convert to fraction form
    55,385.30/76,432.52 = 31,511.46/x
  3. Step 3: Cross multiply
    55,385.30x = 76,432.52 × 31,511.46
  4. Step 4: Simplify right side
    55,385.30x = 2,408,500,296.68
  5. Step 5: Solve for x
    x = 2,408,500,296.68/55,385.30
  6. Step 6: Final answer
    x = 43,486.27

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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.