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Finding the Fourth Proportional to 115,263.72, 172,873.80 and 39,366

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Solution

The fourth proportional to 115,263.72, 172,873.80 and 39,366 is: 59,041.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,263.72 : 172,873.80 = 39,366 : x
  2. Step 2: Convert to fraction form
    115,263.72/172,873.80 = 39,366/x
  3. Step 3: Cross multiply
    115,263.72x = 172,873.80 × 39,366
  4. Step 4: Simplify right side
    115,263.72x = 6,805,350,010.80
  5. Step 5: Solve for x
    x = 6,805,350,010.80/115,263.72
  6. Step 6: Final answer
    x = 59,041.56

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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.