Home / 69,129.36-103,607.78-29,640.65

Finding the Fourth Proportional to 69,129.36, 103,607.78 and 29,640.65

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Solution

The fourth proportional to 69,129.36, 103,607.78 and 29,640.65 is: 44,423.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,129.36 : 103,607.78 = 29,640.65 : x
  2. Step 2: Convert to fraction form
    69,129.36/103,607.78 = 29,640.65/x
  3. Step 3: Cross multiply
    69,129.36x = 103,607.78 × 29,640.65
  4. Step 4: Simplify right side
    69,129.36x = 3,071,001,278.01
  5. Step 5: Solve for x
    x = 3,071,001,278.01/69,129.36
  6. Step 6: Final answer
    x = 44,423.98

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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.