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Finding the Fourth Proportional to 66,557.69, 91,849.15 and 36,343

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Solution

The fourth proportional to 66,557.69, 91,849.15 and 36,343 is: 50,153.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,557.69 : 91,849.15 = 36,343 : x
  2. Step 2: Convert to fraction form
    66,557.69/91,849.15 = 36,343/x
  3. Step 3: Cross multiply
    66,557.69x = 91,849.15 × 36,343
  4. Step 4: Simplify right side
    66,557.69x = 3,338,073,658.45
  5. Step 5: Solve for x
    x = 3,338,073,658.45/66,557.69
  6. Step 6: Final answer
    x = 50,153.09

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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.