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Finding the Fourth Proportional to 66,141.84, 91,273.15 and 39,283.66

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Solution

The fourth proportional to 66,141.84, 91,273.15 and 39,283.66 is: 54,209.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,141.84 : 91,273.15 = 39,283.66 : x
  2. Step 2: Convert to fraction form
    66,141.84/91,273.15 = 39,283.66/x
  3. Step 3: Cross multiply
    66,141.84x = 91,273.15 × 39,283.66
  4. Step 4: Simplify right side
    66,141.84x = 3,585,543,065.34
  5. Step 5: Solve for x
    x = 3,585,543,065.34/66,141.84
  6. Step 6: Final answer
    x = 54,209.91

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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.