Home / 78,401.52-117,616.86-25,813.08

Finding the Fourth Proportional to 78,401.52, 117,616.86 and 25,813.08

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Solution

The fourth proportional to 78,401.52, 117,616.86 and 25,813.08 is: 38,724.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,401.52 : 117,616.86 = 25,813.08 : x
  2. Step 2: Convert to fraction form
    78,401.52/117,616.86 = 25,813.08/x
  3. Step 3: Cross multiply
    78,401.52x = 117,616.86 × 25,813.08
  4. Step 4: Simplify right side
    78,401.52x = 3,036,053,416.53
  5. Step 5: Solve for x
    x = 3,036,053,416.53/78,401.52
  6. Step 6: Final answer
    x = 38,724.42

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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.