Home / 83,390.18-115,076.22-47,579.54

Finding the Fourth Proportional to 83,390.18, 115,076.22 and 47,579.54

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Solution

The fourth proportional to 83,390.18, 115,076.22 and 47,579.54 is: 65,658.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,390.18 : 115,076.22 = 47,579.54 : x
  2. Step 2: Convert to fraction form
    83,390.18/115,076.22 = 47,579.54/x
  3. Step 3: Cross multiply
    83,390.18x = 115,076.22 × 47,579.54
  4. Step 4: Simplify right side
    83,390.18x = 5,475,273,612.54
  5. Step 5: Solve for x
    x = 5,475,273,612.54/83,390.18
  6. Step 6: Final answer
    x = 65,658.49

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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.