Home / 51,426.10-77,139.15-18,145.90

Finding the Fourth Proportional to 51,426.10, 77,139.15 and 18,145.90

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Solution

The fourth proportional to 51,426.10, 77,139.15 and 18,145.90 is: 27,218.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,426.10 : 77,139.15 = 18,145.90 : x
  2. Step 2: Convert to fraction form
    51,426.10/77,139.15 = 18,145.90/x
  3. Step 3: Cross multiply
    51,426.10x = 77,139.15 × 18,145.90
  4. Step 4: Simplify right side
    51,426.10x = 1,399,759,301.99
  5. Step 5: Solve for x
    x = 1,399,759,301.99/51,426.10
  6. Step 6: Final answer
    x = 27,218.85

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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.