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Finding the Fourth Proportional to 66,641.64, 91,950.30 and 39,792.84

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Solution

The fourth proportional to 66,641.64, 91,950.30 and 39,792.84 is: 54,905.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,641.64 : 91,950.30 = 39,792.84 : x
  2. Step 2: Convert to fraction form
    66,641.64/91,950.30 = 39,792.84/x
  3. Step 3: Cross multiply
    66,641.64x = 91,950.30 × 39,792.84
  4. Step 4: Simplify right side
    66,641.64x = 3,658,963,575.85
  5. Step 5: Solve for x
    x = 3,658,963,575.85/66,641.64
  6. Step 6: Final answer
    x = 54,905.06

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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.