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Finding the Fourth Proportional to 55,799.52, 83,699.28 and 20,748

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Solution

The fourth proportional to 55,799.52, 83,699.28 and 20,748 is: 31,122.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,799.52 : 83,699.28 = 20,748 : x
  2. Step 2: Convert to fraction form
    55,799.52/83,699.28 = 20,748/x
  3. Step 3: Cross multiply
    55,799.52x = 83,699.28 × 20,748
  4. Step 4: Simplify right side
    55,799.52x = 1,736,592,661.44
  5. Step 5: Solve for x
    x = 1,736,592,661.44/55,799.52
  6. Step 6: Final answer
    x = 31,122.00

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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.