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Finding the Fourth Proportional to 66,299.25, 91,495.20 and 36,085.66

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Solution

The fourth proportional to 66,299.25, 91,495.20 and 36,085.66 is: 49,799.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,299.25 : 91,495.20 = 36,085.66 : x
  2. Step 2: Convert to fraction form
    66,299.25/91,495.20 = 36,085.66/x
  3. Step 3: Cross multiply
    66,299.25x = 91,495.20 × 36,085.66
  4. Step 4: Simplify right side
    66,299.25x = 3,301,664,678.83
  5. Step 5: Solve for x
    x = 3,301,664,678.83/66,299.25
  6. Step 6: Final answer
    x = 49,799.43

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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.