Home / 78,474.30-117,557.85-47,216.70

Finding the Fourth Proportional to 78,474.30, 117,557.85 and 47,216.70

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Solution

The fourth proportional to 78,474.30, 117,557.85 and 47,216.70 is: 70,732.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,474.30 : 117,557.85 = 47,216.70 : x
  2. Step 2: Convert to fraction form
    78,474.30/117,557.85 = 47,216.70/x
  3. Step 3: Cross multiply
    78,474.30x = 117,557.85 × 47,216.70
  4. Step 4: Simplify right side
    78,474.30x = 5,550,693,736.10
  5. Step 5: Solve for x
    x = 5,550,693,736.10/78,474.30
  6. Step 6: Final answer
    x = 70,732.63

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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.