Home / 78,029.92-117,032.64-25,439.14

Finding the Fourth Proportional to 78,029.92, 117,032.64 and 25,439.14

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Solution

The fourth proportional to 78,029.92, 117,032.64 and 25,439.14 is: 38,154.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,029.92 : 117,032.64 = 25,439.14 : x
  2. Step 2: Convert to fraction form
    78,029.92/117,032.64 = 25,439.14/x
  3. Step 3: Cross multiply
    78,029.92x = 117,032.64 × 25,439.14
  4. Step 4: Simplify right side
    78,029.92x = 2,977,209,713.53
  5. Step 5: Solve for x
    x = 2,977,209,713.53/78,029.92
  6. Step 6: Final answer
    x = 38,154.72

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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.