Home / 78,341.18-117,499.60-25,750.30

Finding the Fourth Proportional to 78,341.18, 117,499.60 and 25,750.30

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Solution

The fourth proportional to 78,341.18, 117,499.60 and 25,750.30 is: 38,621.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,341.18 : 117,499.60 = 25,750.30 : x
  2. Step 2: Convert to fraction form
    78,341.18/117,499.60 = 25,750.30/x
  3. Step 3: Cross multiply
    78,341.18x = 117,499.60 × 25,750.30
  4. Step 4: Simplify right side
    78,341.18x = 3,025,649,949.88
  5. Step 5: Solve for x
    x = 3,025,649,949.88/78,341.18
  6. Step 6: Final answer
    x = 38,621.45

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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.