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Finding the Fourth Proportional to 55,532, 83,291.88 and 13,979

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Solution

The fourth proportional to 55,532, 83,291.88 and 13,979 is: 20,966.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,532 : 83,291.88 = 13,979 : x
  2. Step 2: Convert to fraction form
    55,532/83,291.88 = 13,979/x
  3. Step 3: Cross multiply
    55,532x = 83,291.88 × 13,979
  4. Step 4: Simplify right side
    55,532x = 1,164,337,190.52
  5. Step 5: Solve for x
    x = 1,164,337,190.52/55,532
  6. Step 6: Final answer
    x = 20,966.96

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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.