Home / 79,071.46-109,115.40-47,257.90

Finding the Fourth Proportional to 79,071.46, 109,115.40 and 47,257.90

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Solution

The fourth proportional to 79,071.46, 109,115.40 and 47,257.90 is: 65,213.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,071.46 : 109,115.40 = 47,257.90 : x
  2. Step 2: Convert to fraction form
    79,071.46/109,115.40 = 47,257.90/x
  3. Step 3: Cross multiply
    79,071.46x = 109,115.40 × 47,257.90
  4. Step 4: Simplify right side
    79,071.46x = 5,156,564,566.09
  5. Step 5: Solve for x
    x = 5,156,564,566.09/79,071.46
  6. Step 6: Final answer
    x = 65,213.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.