Home / 77,972.13-116,940.28-21,816.18

Finding the Fourth Proportional to 77,972.13, 116,940.28 and 21,816.18

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Solution

The fourth proportional to 77,972.13, 116,940.28 and 21,816.18 is: 32,719.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,972.13 : 116,940.28 = 21,816.18 : x
  2. Step 2: Convert to fraction form
    77,972.13/116,940.28 = 21,816.18/x
  3. Step 3: Cross multiply
    77,972.13x = 116,940.28 × 21,816.18
  4. Step 4: Simplify right side
    77,972.13x = 2,551,190,197.73
  5. Step 5: Solve for x
    x = 2,551,190,197.73/77,972.13
  6. Step 6: Final answer
    x = 32,719.26

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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.