Home / 57,515.06-86,308.45-21,979.55

Finding the Fourth Proportional to 57,515.06, 86,308.45 and 21,979.55

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Solution

The fourth proportional to 57,515.06, 86,308.45 and 21,979.55 is: 32,983.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,515.06 : 86,308.45 = 21,979.55 : x
  2. Step 2: Convert to fraction form
    57,515.06/86,308.45 = 21,979.55/x
  3. Step 3: Cross multiply
    57,515.06x = 86,308.45 × 21,979.55
  4. Step 4: Simplify right side
    57,515.06x = 1,897,021,053.02
  5. Step 5: Solve for x
    x = 1,897,021,053.02/57,515.06
  6. Step 6: Final answer
    x = 32,983.03

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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.