Home / 42,317.22-63,517.12-20,145.90

Finding the Fourth Proportional to 42,317.22, 63,517.12 and 20,145.90

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Solution

The fourth proportional to 42,317.22, 63,517.12 and 20,145.90 is: 30,238.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,317.22 : 63,517.12 = 20,145.90 : x
  2. Step 2: Convert to fraction form
    42,317.22/63,517.12 = 20,145.90/x
  3. Step 3: Cross multiply
    42,317.22x = 63,517.12 × 20,145.90
  4. Step 4: Simplify right side
    42,317.22x = 1,279,609,547.81
  5. Step 5: Solve for x
    x = 1,279,609,547.81/42,317.22
  6. Step 6: Final answer
    x = 30,238.51

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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.