Home / 40,087.93-55,306.43-30,892.20

Finding the Fourth Proportional to 40,087.93, 55,306.43 and 30,892.20

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Solution

The fourth proportional to 40,087.93, 55,306.43 and 30,892.20 is: 42,619.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,087.93 : 55,306.43 = 30,892.20 : x
  2. Step 2: Convert to fraction form
    40,087.93/55,306.43 = 30,892.20/x
  3. Step 3: Cross multiply
    40,087.93x = 55,306.43 × 30,892.20
  4. Step 4: Simplify right side
    40,087.93x = 1,708,536,865.85
  5. Step 5: Solve for x
    x = 1,708,536,865.85/40,087.93
  6. Step 6: Final answer
    x = 42,619.73

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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.