Home / 78,226.20-117,339.30-25,637.40

Finding the Fourth Proportional to 78,226.20, 117,339.30 and 25,637.40

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Solution

The fourth proportional to 78,226.20, 117,339.30 and 25,637.40 is: 38,456.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,226.20 : 117,339.30 = 25,637.40 : x
  2. Step 2: Convert to fraction form
    78,226.20/117,339.30 = 25,637.40/x
  3. Step 3: Cross multiply
    78,226.20x = 117,339.30 × 25,637.40
  4. Step 4: Simplify right side
    78,226.20x = 3,008,274,569.82
  5. Step 5: Solve for x
    x = 3,008,274,569.82/78,226.20
  6. Step 6: Final answer
    x = 38,456.10

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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.