Home / 51,395.28-77,099.04-21,809.20

Finding the Fourth Proportional to 51,395.28, 77,099.04 and 21,809.20

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Solution

The fourth proportional to 51,395.28, 77,099.04 and 21,809.20 is: 32,716.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,395.28 : 77,099.04 = 21,809.20 : x
  2. Step 2: Convert to fraction form
    51,395.28/77,099.04 = 21,809.20/x
  3. Step 3: Cross multiply
    51,395.28x = 77,099.04 × 21,809.20
  4. Step 4: Simplify right side
    51,395.28x = 1,681,468,383.17
  5. Step 5: Solve for x
    x = 1,681,468,383.17/51,395.28
  6. Step 6: Final answer
    x = 32,716.40

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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.