Home / 69,815.89-103,934.14-69,400.70

Finding the Fourth Proportional to 69,815.89, 103,934.14 and 69,400.70

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Solution

The fourth proportional to 69,815.89, 103,934.14 and 69,400.70 is: 103,316.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,815.89 : 103,934.14 = 69,400.70 : x
  2. Step 2: Convert to fraction form
    69,815.89/103,934.14 = 69,400.70/x
  3. Step 3: Cross multiply
    69,815.89x = 103,934.14 × 69,400.70
  4. Step 4: Simplify right side
    69,815.89x = 7,213,102,069.90
  5. Step 5: Solve for x
    x = 7,213,102,069.90/69,815.89
  6. Step 6: Final answer
    x = 103,316.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.