Home / 69,143.72-103,633.56-61,172.10

Finding the Fourth Proportional to 69,143.72, 103,633.56 and 61,172.10

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Solution

The fourth proportional to 69,143.72, 103,633.56 and 61,172.10 is: 91,685.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,143.72 : 103,633.56 = 61,172.10 : x
  2. Step 2: Convert to fraction form
    69,143.72/103,633.56 = 61,172.10/x
  3. Step 3: Cross multiply
    69,143.72x = 103,633.56 × 61,172.10
  4. Step 4: Simplify right side
    69,143.72x = 6,339,482,495.68
  5. Step 5: Solve for x
    x = 6,339,482,495.68/69,143.72
  6. Step 6: Final answer
    x = 91,685.59

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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.