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Finding the Fourth Proportional to 69,718.65, 96,210.11 and 39,089.71

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Solution

The fourth proportional to 69,718.65, 96,210.11 and 39,089.71 is: 53,942.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,718.65 : 96,210.11 = 39,089.71 : x
  2. Step 2: Convert to fraction form
    69,718.65/96,210.11 = 39,089.71/x
  3. Step 3: Cross multiply
    69,718.65x = 96,210.11 × 39,089.71
  4. Step 4: Simplify right side
    69,718.65x = 3,760,825,298.97
  5. Step 5: Solve for x
    x = 3,760,825,298.97/69,718.65
  6. Step 6: Final answer
    x = 53,942.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.