Home / 83,456.28-115,180.38-47,638.08

Finding the Fourth Proportional to 83,456.28, 115,180.38 and 47,638.08

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Solution

The fourth proportional to 83,456.28, 115,180.38 and 47,638.08 is: 65,746.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,456.28 : 115,180.38 = 47,638.08 : x
  2. Step 2: Convert to fraction form
    83,456.28/115,180.38 = 47,638.08/x
  3. Step 3: Cross multiply
    83,456.28x = 115,180.38 × 47,638.08
  4. Step 4: Simplify right side
    83,456.28x = 5,486,972,156.87
  5. Step 5: Solve for x
    x = 5,486,972,156.87/83,456.28
  6. Step 6: Final answer
    x = 65,746.67

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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.