Home / 71,512.78-107,298.33-57,603.46

Finding the Fourth Proportional to 71,512.78, 107,298.33 and 57,603.46

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Solution

The fourth proportional to 71,512.78, 107,298.33 and 57,603.46 is: 86,428.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,512.78 : 107,298.33 = 57,603.46 : x
  2. Step 2: Convert to fraction form
    71,512.78/107,298.33 = 57,603.46/x
  3. Step 3: Cross multiply
    71,512.78x = 107,298.33 × 57,603.46
  4. Step 4: Simplify right side
    71,512.78x = 6,180,755,060.22
  5. Step 5: Solve for x
    x = 6,180,755,060.22/71,512.78
  6. Step 6: Final answer
    x = 86,428.68

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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.