Home / 40,135.95-55,387.53-22,230.90

Finding the Fourth Proportional to 40,135.95, 55,387.53 and 22,230.90

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Solution

The fourth proportional to 40,135.95, 55,387.53 and 22,230.90 is: 30,678.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,135.95 : 55,387.53 = 22,230.90 : x
  2. Step 2: Convert to fraction form
    40,135.95/55,387.53 = 22,230.90/x
  3. Step 3: Cross multiply
    40,135.95x = 55,387.53 × 22,230.90
  4. Step 4: Simplify right side
    40,135.95x = 1,231,314,640.68
  5. Step 5: Solve for x
    x = 1,231,314,640.68/40,135.95
  6. Step 6: Final answer
    x = 30,678.60

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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.