Home / 75,780.28-113,635.32-28,360.21

Finding the Fourth Proportional to 75,780.28, 113,635.32 and 28,360.21

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Solution

The fourth proportional to 75,780.28, 113,635.32 and 28,360.21 is: 42,527.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,780.28 : 113,635.32 = 28,360.21 : x
  2. Step 2: Convert to fraction form
    75,780.28/113,635.32 = 28,360.21/x
  3. Step 3: Cross multiply
    75,780.28x = 113,635.32 × 28,360.21
  4. Step 4: Simplify right side
    75,780.28x = 3,222,721,538.62
  5. Step 5: Solve for x
    x = 3,222,721,538.62/75,780.28
  6. Step 6: Final answer
    x = 42,527.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.