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Finding the Fourth Proportional to 91,363.11, 137,059.44 and 28,168.44

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Solution

The fourth proportional to 91,363.11, 137,059.44 and 28,168.44 is: 42,257.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,363.11 : 137,059.44 = 28,168.44 : x
  2. Step 2: Convert to fraction form
    91,363.11/137,059.44 = 28,168.44/x
  3. Step 3: Cross multiply
    91,363.11x = 137,059.44 × 28,168.44
  4. Step 4: Simplify right side
    91,363.11x = 3,860,750,612.07
  5. Step 5: Solve for x
    x = 3,860,750,612.07/91,363.11
  6. Step 6: Final answer
    x = 42,257.22

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1.5x scale

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.