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Finding the Fourth Proportional to 80,612.48, 120,918.56 and 21,448.14

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Solution

The fourth proportional to 80,612.48, 120,918.56 and 21,448.14 is: 32,172.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,612.48 : 120,918.56 = 21,448.14 : x
  2. Step 2: Convert to fraction form
    80,612.48/120,918.56 = 21,448.14/x
  3. Step 3: Cross multiply
    80,612.48x = 120,918.56 × 21,448.14
  4. Step 4: Simplify right side
    80,612.48x = 2,593,478,203.48
  5. Step 5: Solve for x
    x = 2,593,478,203.48/80,612.48
  6. Step 6: Final answer
    x = 32,172.17

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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.