Home / 52,178.24-78,286.56-21,022.40

Finding the Fourth Proportional to 52,178.24, 78,286.56 and 21,022.40

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Solution

The fourth proportional to 52,178.24, 78,286.56 and 21,022.40 is: 31,541.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,178.24 : 78,286.56 = 21,022.40 : x
  2. Step 2: Convert to fraction form
    52,178.24/78,286.56 = 21,022.40/x
  3. Step 3: Cross multiply
    52,178.24x = 78,286.56 × 21,022.40
  4. Step 4: Simplify right side
    52,178.24x = 1,645,771,378.94
  5. Step 5: Solve for x
    x = 1,645,771,378.94/52,178.24
  6. Step 6: Final answer
    x = 31,541.34

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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.