Home / 56,104.50-77,418.68-39,145.20

Finding the Fourth Proportional to 56,104.50, 77,418.68 and 39,145.20

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Solution

The fourth proportional to 56,104.50, 77,418.68 and 39,145.20 is: 54,016.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,104.50 : 77,418.68 = 39,145.20 : x
  2. Step 2: Convert to fraction form
    56,104.50/77,418.68 = 39,145.20/x
  3. Step 3: Cross multiply
    56,104.50x = 77,418.68 × 39,145.20
  4. Step 4: Simplify right side
    56,104.50x = 3,030,569,516.61
  5. Step 5: Solve for x
    x = 3,030,569,516.61/56,104.50
  6. Step 6: Final answer
    x = 54,016.51

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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.