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Finding the Fourth Proportional to 91,622.61, 137,436.75 and 43,580.70

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Solution

The fourth proportional to 91,622.61, 137,436.75 and 43,580.70 is: 65,372.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,622.61 : 137,436.75 = 43,580.70 : x
  2. Step 2: Convert to fraction form
    91,622.61/137,436.75 = 43,580.70/x
  3. Step 3: Cross multiply
    91,622.61x = 137,436.75 × 43,580.70
  4. Step 4: Simplify right side
    91,622.61x = 5,989,589,770.73
  5. Step 5: Solve for x
    x = 5,989,589,770.73/91,622.61
  6. Step 6: Final answer
    x = 65,372.40

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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.