Home / 39,750.90-54,855.10-21,845.88

Finding the Fourth Proportional to 39,750.90, 54,855.10 and 21,845.88

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Solution

The fourth proportional to 39,750.90, 54,855.10 and 21,845.88 is: 30,146.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,750.90 : 54,855.10 = 21,845.88 : x
  2. Step 2: Convert to fraction form
    39,750.90/54,855.10 = 21,845.88/x
  3. Step 3: Cross multiply
    39,750.90x = 54,855.10 × 21,845.88
  4. Step 4: Simplify right side
    39,750.90x = 1,198,357,931.99
  5. Step 5: Solve for x
    x = 1,198,357,931.99/39,750.90
  6. Step 6: Final answer
    x = 30,146.69

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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.