Home / 52,278.24-78,448.08-20,691.36

Finding the Fourth Proportional to 52,278.24, 78,448.08 and 20,691.36

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Solution

The fourth proportional to 52,278.24, 78,448.08 and 20,691.36 is: 31,049.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,278.24 : 78,448.08 = 20,691.36 : x
  2. Step 2: Convert to fraction form
    52,278.24/78,448.08 = 20,691.36/x
  3. Step 3: Cross multiply
    52,278.24x = 78,448.08 × 20,691.36
  4. Step 4: Simplify right side
    52,278.24x = 1,623,197,464.59
  5. Step 5: Solve for x
    x = 1,623,197,464.59/52,278.24
  6. Step 6: Final answer
    x = 31,049.20

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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.