Home / 52,111.88-78,178.66-20,947.14

Finding the Fourth Proportional to 52,111.88, 78,178.66 and 20,947.14

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Solution

The fourth proportional to 52,111.88, 78,178.66 and 20,947.14 is: 31,425.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,111.88 : 78,178.66 = 20,947.14 : x
  2. Step 2: Convert to fraction form
    52,111.88/78,178.66 = 20,947.14/x
  3. Step 3: Cross multiply
    52,111.88x = 78,178.66 × 20,947.14
  4. Step 4: Simplify right side
    52,111.88x = 1,637,619,336.03
  5. Step 5: Solve for x
    x = 1,637,619,336.03/52,111.88
  6. Step 6: Final answer
    x = 31,425.07

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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.