Home / 78,487.18-117,734.85-25,900.76

Finding the Fourth Proportional to 78,487.18, 117,734.85 and 25,900.76

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Solution

The fourth proportional to 78,487.18, 117,734.85 and 25,900.76 is: 38,852.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,487.18 : 117,734.85 = 25,900.76 : x
  2. Step 2: Convert to fraction form
    78,487.18/117,734.85 = 25,900.76/x
  3. Step 3: Cross multiply
    78,487.18x = 117,734.85 × 25,900.76
  4. Step 4: Simplify right side
    78,487.18x = 3,049,422,387.82
  5. Step 5: Solve for x
    x = 3,049,422,387.82/78,487.18
  6. Step 6: Final answer
    x = 38,852.49

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1.5x scale

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.