Home / 78,219.12-117,345.68-25,626.64

Finding the Fourth Proportional to 78,219.12, 117,345.68 and 25,626.64

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Solution

The fourth proportional to 78,219.12, 117,345.68 and 25,626.64 is: 38,445.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,219.12 : 117,345.68 = 25,626.64 : x
  2. Step 2: Convert to fraction form
    78,219.12/117,345.68 = 25,626.64/x
  3. Step 3: Cross multiply
    78,219.12x = 117,345.68 × 25,626.64
  4. Step 4: Simplify right side
    78,219.12x = 3,007,175,496.92
  5. Step 5: Solve for x
    x = 3,007,175,496.92/78,219.12
  6. Step 6: Final answer
    x = 38,445.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.