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Finding the Fourth Proportional to 57,360.78, 86,041.17 and 17,921.00

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Solution

The fourth proportional to 57,360.78, 86,041.17 and 17,921.00 is: 26,881.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,360.78 : 86,041.17 = 17,921.00 : x
  2. Step 2: Convert to fraction form
    57,360.78/86,041.17 = 17,921.00/x
  3. Step 3: Cross multiply
    57,360.78x = 86,041.17 × 17,921.00
  4. Step 4: Simplify right side
    57,360.78x = 1,541,944,022.67
  5. Step 5: Solve for x
    x = 1,541,944,022.67/57,360.78
  6. Step 6: Final answer
    x = 26,881.50

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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.