Home / 91,589.48-137,403.96-28,408.35

Finding the Fourth Proportional to 91,589.48, 137,403.96 and 28,408.35

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Solution

The fourth proportional to 91,589.48, 137,403.96 and 28,408.35 is: 42,618.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,589.48 : 137,403.96 = 28,408.35 : x
  2. Step 2: Convert to fraction form
    91,589.48/137,403.96 = 28,408.35/x
  3. Step 3: Cross multiply
    91,589.48x = 137,403.96 × 28,408.35
  4. Step 4: Simplify right side
    91,589.48x = 3,903,419,787.07
  5. Step 5: Solve for x
    x = 3,903,419,787.07/91,589.48
  6. Step 6: Final answer
    x = 42,618.65

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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.