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Finding the Fourth Proportional to 66,537.20, 91,821.57 and 36,323.20

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Solution

The fourth proportional to 66,537.20, 91,821.57 and 36,323.20 is: 50,126.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,537.20 : 91,821.57 = 36,323.20 : x
  2. Step 2: Convert to fraction form
    66,537.20/91,821.57 = 36,323.20/x
  3. Step 3: Cross multiply
    66,537.20x = 91,821.57 × 36,323.20
  4. Step 4: Simplify right side
    66,537.20x = 3,335,252,792.32
  5. Step 5: Solve for x
    x = 3,335,252,792.32/66,537.20
  6. Step 6: Final answer
    x = 50,126.14

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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.