Home / 75,012.80-112,519.35-18,853.02

Finding the Fourth Proportional to 75,012.80, 112,519.35 and 18,853.02

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Solution

The fourth proportional to 75,012.80, 112,519.35 and 18,853.02 is: 28,279.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,012.80 : 112,519.35 = 18,853.02 : x
  2. Step 2: Convert to fraction form
    75,012.80/112,519.35 = 18,853.02/x
  3. Step 3: Cross multiply
    75,012.80x = 112,519.35 × 18,853.02
  4. Step 4: Simplify right side
    75,012.80x = 2,121,329,555.94
  5. Step 5: Solve for x
    x = 2,121,329,555.94/75,012.80
  6. Step 6: Final answer
    x = 28,279.57

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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.