Home / 36,748.80-55,062.40-21,139.20

Finding the Fourth Proportional to 36,748.80, 55,062.40 and 21,139.20

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Solution

The fourth proportional to 36,748.80, 55,062.40 and 21,139.20 is: 31,673.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,748.80 : 55,062.40 = 21,139.20 : x
  2. Step 2: Convert to fraction form
    36,748.80/55,062.40 = 21,139.20/x
  3. Step 3: Cross multiply
    36,748.80x = 55,062.40 × 21,139.20
  4. Step 4: Simplify right side
    36,748.80x = 1,163,975,086.08
  5. Step 5: Solve for x
    x = 1,163,975,086.08/36,748.80
  6. Step 6: Final answer
    x = 31,673.83

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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.