Home / 78,312.96-117,480.24-25,727.76

Finding the Fourth Proportional to 78,312.96, 117,480.24 and 25,727.76

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Solution

The fourth proportional to 78,312.96, 117,480.24 and 25,727.76 is: 38,595.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,312.96 : 117,480.24 = 25,727.76 : x
  2. Step 2: Convert to fraction form
    78,312.96/117,480.24 = 25,727.76/x
  3. Step 3: Cross multiply
    78,312.96x = 117,480.24 × 25,727.76
  4. Step 4: Simplify right side
    78,312.96x = 3,022,503,419.46
  5. Step 5: Solve for x
    x = 3,022,503,419.46/78,312.96
  6. Step 6: Final answer
    x = 38,595.19

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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.