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Finding the Fourth Proportional to 91,849.44, 137,779.29 and 28,678.29

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Solution

The fourth proportional to 91,849.44, 137,779.29 and 28,678.29 is: 43,019.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,849.44 : 137,779.29 = 28,678.29 : x
  2. Step 2: Convert to fraction form
    91,849.44/137,779.29 = 28,678.29/x
  3. Step 3: Cross multiply
    91,849.44x = 137,779.29 × 28,678.29
  4. Step 4: Simplify right side
    91,849.44x = 3,951,274,434.61
  5. Step 5: Solve for x
    x = 3,951,274,434.61/91,849.44
  6. Step 6: Final answer
    x = 43,019.04

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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.