Home / 40,589.56-55,909.40-28,631.88

Finding the Fourth Proportional to 40,589.56, 55,909.40 and 28,631.88

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Solution

The fourth proportional to 40,589.56, 55,909.40 and 28,631.88 is: 39,438.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,589.56 : 55,909.40 = 28,631.88 : x
  2. Step 2: Convert to fraction form
    40,589.56/55,909.40 = 28,631.88/x
  3. Step 3: Cross multiply
    40,589.56x = 55,909.40 × 28,631.88
  4. Step 4: Simplify right side
    40,589.56x = 1,600,791,231.67
  5. Step 5: Solve for x
    x = 1,600,791,231.67/40,589.56
  6. Step 6: Final answer
    x = 39,438.50

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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.