Home / 78,014.39-117,040.04-25,423.88

Finding the Fourth Proportional to 78,014.39, 117,040.04 and 25,423.88

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Solution

The fourth proportional to 78,014.39, 117,040.04 and 25,423.88 is: 38,141.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,014.39 : 117,040.04 = 25,423.88 : x
  2. Step 2: Convert to fraction form
    78,014.39/117,040.04 = 25,423.88/x
  3. Step 3: Cross multiply
    78,014.39x = 117,040.04 × 25,423.88
  4. Step 4: Simplify right side
    78,014.39x = 2,975,611,315.18
  5. Step 5: Solve for x
    x = 2,975,611,315.18/78,014.39
  6. Step 6: Final answer
    x = 38,141.83

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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.