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Finding the Fourth Proportional to 115,325.60, 172,972.20 and 36,447.80

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Solution

The fourth proportional to 115,325.60, 172,972.20 and 36,447.80 is: 54,666.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,325.60 : 172,972.20 = 36,447.80 : x
  2. Step 2: Convert to fraction form
    115,325.60/172,972.20 = 36,447.80/x
  3. Step 3: Cross multiply
    115,325.60x = 172,972.20 × 36,447.80
  4. Step 4: Simplify right side
    115,325.60x = 6,304,456,151.16
  5. Step 5: Solve for x
    x = 6,304,456,151.16/115,325.60
  6. Step 6: Final answer
    x = 54,666.58

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1.5x scale

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.