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Finding the Fourth Proportional to 55,836.03, 83,736.03 and 18,387.20

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Solution

The fourth proportional to 55,836.03, 83,736.03 and 18,387.20 is: 27,574.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,836.03 : 83,736.03 = 18,387.20 : x
  2. Step 2: Convert to fraction form
    55,836.03/83,736.03 = 18,387.20/x
  3. Step 3: Cross multiply
    55,836.03x = 83,736.03 × 18,387.20
  4. Step 4: Simplify right side
    55,836.03x = 1,539,671,130.82
  5. Step 5: Solve for x
    x = 1,539,671,130.82/55,836.03
  6. Step 6: Final answer
    x = 27,574.87

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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.