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Finding the Fourth Proportional to 66,408.62, 91,641.54 and 36,193.34

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Solution

The fourth proportional to 66,408.62, 91,641.54 and 36,193.34 is: 49,945.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,408.62 : 91,641.54 = 36,193.34 : x
  2. Step 2: Convert to fraction form
    66,408.62/91,641.54 = 36,193.34/x
  3. Step 3: Cross multiply
    66,408.62x = 91,641.54 × 36,193.34
  4. Step 4: Simplify right side
    66,408.62x = 3,316,812,957.14
  5. Step 5: Solve for x
    x = 3,316,812,957.14/66,408.62
  6. Step 6: Final answer
    x = 49,945.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.