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Finding the Fourth Proportional to 91,395.90, 137,093.85 and 29,072.70

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Solution

The fourth proportional to 91,395.90, 137,093.85 and 29,072.70 is: 43,609.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,395.90 : 137,093.85 = 29,072.70 : x
  2. Step 2: Convert to fraction form
    91,395.90/137,093.85 = 29,072.70/x
  3. Step 3: Cross multiply
    91,395.90x = 137,093.85 × 29,072.70
  4. Step 4: Simplify right side
    91,395.90x = 3,985,688,372.90
  5. Step 5: Solve for x
    x = 3,985,688,372.90/91,395.90
  6. Step 6: Final answer
    x = 43,609.05

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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.