Home / 52,012.38-77,988.47-20,385.48

Finding the Fourth Proportional to 52,012.38, 77,988.47 and 20,385.48

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Solution

The fourth proportional to 52,012.38, 77,988.47 and 20,385.48 is: 30,566.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,012.38 : 77,988.47 = 20,385.48 : x
  2. Step 2: Convert to fraction form
    52,012.38/77,988.47 = 20,385.48/x
  3. Step 3: Cross multiply
    52,012.38x = 77,988.47 × 20,385.48
  4. Step 4: Simplify right side
    52,012.38x = 1,589,832,293.49
  5. Step 5: Solve for x
    x = 1,589,832,293.49/52,012.38
  6. Step 6: Final answer
    x = 30,566.42

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1.5x scale

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.