Home / 90,115.92-124,358-49,831.36

Finding the Fourth Proportional to 90,115.92, 124,358 and 49,831.36

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Solution

The fourth proportional to 90,115.92, 124,358 and 49,831.36 is: 68,766.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,115.92 : 124,358 = 49,831.36 : x
  2. Step 2: Convert to fraction form
    90,115.92/124,358 = 49,831.36/x
  3. Step 3: Cross multiply
    90,115.92x = 124,358 × 49,831.36
  4. Step 4: Simplify right side
    90,115.92x = 6,196,928,266.88
  5. Step 5: Solve for x
    x = 6,196,928,266.88/90,115.92
  6. Step 6: Final answer
    x = 68,766.19

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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.