Home / 51,921.14-77,892.13-18,643.80

Finding the Fourth Proportional to 51,921.14, 77,892.13 and 18,643.80

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Solution

The fourth proportional to 51,921.14, 77,892.13 and 18,643.80 is: 27,969.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,921.14 : 77,892.13 = 18,643.80 : x
  2. Step 2: Convert to fraction form
    51,921.14/77,892.13 = 18,643.80/x
  3. Step 3: Cross multiply
    51,921.14x = 77,892.13 × 18,643.80
  4. Step 4: Simplify right side
    51,921.14x = 1,452,205,608.69
  5. Step 5: Solve for x
    x = 1,452,205,608.69/51,921.14
  6. Step 6: Final answer
    x = 27,969.45

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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.