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Finding the Fourth Proportional to 69,071.91, 103,470.69 and 53,221.95

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Solution

The fourth proportional to 69,071.91, 103,470.69 and 53,221.95 is: 79,727.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,071.91 : 103,470.69 = 53,221.95 : x
  2. Step 2: Convert to fraction form
    69,071.91/103,470.69 = 53,221.95/x
  3. Step 3: Cross multiply
    69,071.91x = 103,470.69 × 53,221.95
  4. Step 4: Simplify right side
    69,071.91x = 5,506,911,889.65
  5. Step 5: Solve for x
    x = 5,506,911,889.65/69,071.91
  6. Step 6: Final answer
    x = 79,727.23

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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.