Home / 78,441.03-108,249.46-42,631.04

Finding the Fourth Proportional to 78,441.03, 108,249.46 and 42,631.04

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Solution

The fourth proportional to 78,441.03, 108,249.46 and 42,631.04 is: 58,831.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,441.03 : 108,249.46 = 42,631.04 : x
  2. Step 2: Convert to fraction form
    78,441.03/108,249.46 = 42,631.04/x
  3. Step 3: Cross multiply
    78,441.03x = 108,249.46 × 42,631.04
  4. Step 4: Simplify right side
    78,441.03x = 4,614,787,223.28
  5. Step 5: Solve for x
    x = 4,614,787,223.28/78,441.03
  6. Step 6: Final answer
    x = 58,831.29

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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.