Home / 39,780.16-54,899.81-22,789.99

Finding the Fourth Proportional to 39,780.16, 54,899.81 and 22,789.99

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Solution

The fourth proportional to 39,780.16, 54,899.81 and 22,789.99 is: 31,452.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,780.16 : 54,899.81 = 22,789.99 : x
  2. Step 2: Convert to fraction form
    39,780.16/54,899.81 = 22,789.99/x
  3. Step 3: Cross multiply
    39,780.16x = 54,899.81 × 22,789.99
  4. Step 4: Simplify right side
    39,780.16x = 1,251,166,206.92
  5. Step 5: Solve for x
    x = 1,251,166,206.92/39,780.16
  6. Step 6: Final answer
    x = 31,452.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.