Home / 78,458.38-117,621.23-34,051.75

Finding the Fourth Proportional to 78,458.38, 117,621.23 and 34,051.75

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Solution

The fourth proportional to 78,458.38, 117,621.23 and 34,051.75 is: 51,048.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,458.38 : 117,621.23 = 34,051.75 : x
  2. Step 2: Convert to fraction form
    78,458.38/117,621.23 = 34,051.75/x
  3. Step 3: Cross multiply
    78,458.38x = 117,621.23 × 34,051.75
  4. Step 4: Simplify right side
    78,458.38x = 4,005,207,960.29
  5. Step 5: Solve for x
    x = 4,005,207,960.29/78,458.38
  6. Step 6: Final answer
    x = 51,048.83

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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.