Home / 57,255.90-78,985.92-38,144.55

Finding the Fourth Proportional to 57,255.90, 78,985.92 and 38,144.55

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Solution

The fourth proportional to 57,255.90, 78,985.92 and 38,144.55 is: 52,621.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,255.90 : 78,985.92 = 38,144.55 : x
  2. Step 2: Convert to fraction form
    57,255.90/78,985.92 = 38,144.55/x
  3. Step 3: Cross multiply
    57,255.90x = 78,985.92 × 38,144.55
  4. Step 4: Simplify right side
    57,255.90x = 3,012,882,374.74
  5. Step 5: Solve for x
    x = 3,012,882,374.74/57,255.90
  6. Step 6: Final answer
    x = 52,621.34

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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.