Home / 78,315.28-117,477.01-36,234.66

Finding the Fourth Proportional to 78,315.28, 117,477.01 and 36,234.66

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Solution

The fourth proportional to 78,315.28, 117,477.01 and 36,234.66 is: 54,353.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,315.28 : 117,477.01 = 36,234.66 : x
  2. Step 2: Convert to fraction form
    78,315.28/117,477.01 = 36,234.66/x
  3. Step 3: Cross multiply
    78,315.28x = 117,477.01 × 36,234.66
  4. Step 4: Simplify right side
    78,315.28x = 4,256,739,515.17
  5. Step 5: Solve for x
    x = 4,256,739,515.17/78,315.28
  6. Step 6: Final answer
    x = 54,353.88

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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.