Home / 52,380.61-78,581.30-20,805.55

Finding the Fourth Proportional to 52,380.61, 78,581.30 and 20,805.55

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Solution

The fourth proportional to 52,380.61, 78,581.30 and 20,805.55 is: 31,212.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,380.61 : 78,581.30 = 20,805.55 : x
  2. Step 2: Convert to fraction form
    52,380.61/78,581.30 = 20,805.55/x
  3. Step 3: Cross multiply
    52,380.61x = 78,581.30 × 20,805.55
  4. Step 4: Simplify right side
    52,380.61x = 1,634,926,901.52
  5. Step 5: Solve for x
    x = 1,634,926,901.52/52,380.61
  6. Step 6: Final answer
    x = 31,212.44

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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.