Home / 75,520.32-104,178.78-45,291.12

Finding the Fourth Proportional to 75,520.32, 104,178.78 and 45,291.12

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Solution

The fourth proportional to 75,520.32, 104,178.78 and 45,291.12 is: 62,478.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,520.32 : 104,178.78 = 45,291.12 : x
  2. Step 2: Convert to fraction form
    75,520.32/104,178.78 = 45,291.12/x
  3. Step 3: Cross multiply
    75,520.32x = 104,178.78 × 45,291.12
  4. Step 4: Simplify right side
    75,520.32x = 4,718,373,626.43
  5. Step 5: Solve for x
    x = 4,718,373,626.43/75,520.32
  6. Step 6: Final answer
    x = 62,478.20

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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.