Home / 91,678.12-137,517.28-25,118.82

Finding the Fourth Proportional to 91,678.12, 137,517.28 and 25,118.82

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Solution

The fourth proportional to 91,678.12, 137,517.28 and 25,118.82 is: 37,678.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,678.12 : 137,517.28 = 25,118.82 : x
  2. Step 2: Convert to fraction form
    91,678.12/137,517.28 = 25,118.82/x
  3. Step 3: Cross multiply
    91,678.12x = 137,517.28 × 25,118.82
  4. Step 4: Simplify right side
    91,678.12x = 3,454,271,803.21
  5. Step 5: Solve for x
    x = 3,454,271,803.21/91,678.12
  6. Step 6: Final answer
    x = 37,678.26

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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.