Home / 83,640.91-115,424.73-45,400.49

Finding the Fourth Proportional to 83,640.91, 115,424.73 and 45,400.49

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Solution

The fourth proportional to 83,640.91, 115,424.73 and 45,400.49 is: 62,652.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,640.91 : 115,424.73 = 45,400.49 : x
  2. Step 2: Convert to fraction form
    83,640.91/115,424.73 = 45,400.49/x
  3. Step 3: Cross multiply
    83,640.91x = 115,424.73 × 45,400.49
  4. Step 4: Simplify right side
    83,640.91x = 5,240,339,475.18
  5. Step 5: Solve for x
    x = 5,240,339,475.18/83,640.91
  6. Step 6: Final answer
    x = 62,652.83

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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.