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Finding the Fourth Proportional to 69,712.72, 96,203.65 and 39,500.08

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Solution

The fourth proportional to 69,712.72, 96,203.65 and 39,500.08 is: 54,510.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,712.72 : 96,203.65 = 39,500.08 : x
  2. Step 2: Convert to fraction form
    69,712.72/96,203.65 = 39,500.08/x
  3. Step 3: Cross multiply
    69,712.72x = 96,203.65 × 39,500.08
  4. Step 4: Simplify right side
    69,712.72x = 3,800,051,871.29
  5. Step 5: Solve for x
    x = 3,800,051,871.29/69,712.72
  6. Step 6: Final answer
    x = 54,510.17

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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.