Home / 42,543.58-63,718.17-20,372.53

Finding the Fourth Proportional to 42,543.58, 63,718.17 and 20,372.53

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Solution

The fourth proportional to 42,543.58, 63,718.17 and 20,372.53 is: 30,512.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,543.58 : 63,718.17 = 20,372.53 : x
  2. Step 2: Convert to fraction form
    42,543.58/63,718.17 = 20,372.53/x
  3. Step 3: Cross multiply
    42,543.58x = 63,718.17 × 20,372.53
  4. Step 4: Simplify right side
    42,543.58x = 1,298,100,329.87
  5. Step 5: Solve for x
    x = 1,298,100,329.87/42,543.58
  6. Step 6: Final answer
    x = 30,512.25

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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.