Home / 78,145.30-117,232.56-25,557.64

Finding the Fourth Proportional to 78,145.30, 117,232.56 and 25,557.64

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Solution

The fourth proportional to 78,145.30, 117,232.56 and 25,557.64 is: 38,341.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,145.30 : 117,232.56 = 25,557.64 : x
  2. Step 2: Convert to fraction form
    78,145.30/117,232.56 = 25,557.64/x
  3. Step 3: Cross multiply
    78,145.30x = 117,232.56 × 25,557.64
  4. Step 4: Simplify right side
    78,145.30x = 2,996,187,564.76
  5. Step 5: Solve for x
    x = 2,996,187,564.76/78,145.30
  6. Step 6: Final answer
    x = 38,341.24

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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.