Home / 42,157.64-63,258.33-18,778.61

Finding the Fourth Proportional to 42,157.64, 63,258.33 and 18,778.61

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Solution

The fourth proportional to 42,157.64, 63,258.33 and 18,778.61 is: 28,177.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,157.64 : 63,258.33 = 18,778.61 : x
  2. Step 2: Convert to fraction form
    42,157.64/63,258.33 = 18,778.61/x
  3. Step 3: Cross multiply
    42,157.64x = 63,258.33 × 18,778.61
  4. Step 4: Simplify right side
    42,157.64x = 1,187,903,508.32
  5. Step 5: Solve for x
    x = 1,187,903,508.32/42,157.64
  6. Step 6: Final answer
    x = 28,177.66

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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.