Home / 78,146.44-117,219.69-25,555.91

Finding the Fourth Proportional to 78,146.44, 117,219.69 and 25,555.91

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Solution

The fourth proportional to 78,146.44, 117,219.69 and 25,555.91 is: 38,333.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,146.44 : 117,219.69 = 25,555.91 : x
  2. Step 2: Convert to fraction form
    78,146.44/117,219.69 = 25,555.91/x
  3. Step 3: Cross multiply
    78,146.44x = 117,219.69 × 25,555.91
  4. Step 4: Simplify right side
    78,146.44x = 2,995,655,261.77
  5. Step 5: Solve for x
    x = 2,995,655,261.77/78,146.44
  6. Step 6: Final answer
    x = 38,333.87

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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.