Home / 30,543.64-42,151.26-29,143.96

Finding the Fourth Proportional to 30,543.64, 42,151.26 and 29,143.96

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Solution

The fourth proportional to 30,543.64, 42,151.26 and 29,143.96 is: 40,219.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,543.64 : 42,151.26 = 29,143.96 : x
  2. Step 2: Convert to fraction form
    30,543.64/42,151.26 = 29,143.96/x
  3. Step 3: Cross multiply
    30,543.64x = 42,151.26 × 29,143.96
  4. Step 4: Simplify right side
    30,543.64x = 1,228,454,635.39
  5. Step 5: Solve for x
    x = 1,228,454,635.39/30,543.64
  6. Step 6: Final answer
    x = 40,219.65

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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.