Home / 78,219.72-117,339.30-25,611.03

Finding the Fourth Proportional to 78,219.72, 117,339.30 and 25,611.03

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Solution

The fourth proportional to 78,219.72, 117,339.30 and 25,611.03 is: 38,419.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,219.72 : 117,339.30 = 25,611.03 : x
  2. Step 2: Convert to fraction form
    78,219.72/117,339.30 = 25,611.03/x
  3. Step 3: Cross multiply
    78,219.72x = 117,339.30 × 25,611.03
  4. Step 4: Simplify right side
    78,219.72x = 3,005,180,332.48
  5. Step 5: Solve for x
    x = 3,005,180,332.48/78,219.72
  6. Step 6: Final answer
    x = 38,419.73

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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.