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Finding the Fourth Proportional to 91,060, 136,610.32 and 27,888.96

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Solution

The fourth proportional to 91,060, 136,610.32 and 27,888.96 is: 41,839.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,060 : 136,610.32 = 27,888.96 : x
  2. Step 2: Convert to fraction form
    91,060/136,610.32 = 27,888.96/x
  3. Step 3: Cross multiply
    91,060x = 136,610.32 × 27,888.96
  4. Step 4: Simplify right side
    91,060x = 3,809,919,750.07
  5. Step 5: Solve for x
    x = 3,809,919,750.07/91,060
  6. Step 6: Final answer
    x = 41,839.66

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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.