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Finding the Fourth Proportional to 91,863.34, 137,794.96 and 28,688.87

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Solution

The fourth proportional to 91,863.34, 137,794.96 and 28,688.87 is: 43,033.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,863.34 : 137,794.96 = 28,688.87 : x
  2. Step 2: Convert to fraction form
    91,863.34/137,794.96 = 28,688.87/x
  3. Step 3: Cross multiply
    91,863.34x = 137,794.96 × 28,688.87
  4. Step 4: Simplify right side
    91,863.34x = 3,953,182,074.44
  5. Step 5: Solve for x
    x = 3,953,182,074.44/91,863.34
  6. Step 6: Final answer
    x = 43,033.29

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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.