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Finding the Fourth Proportional to 66,300.80, 91,495.85 and 36,086.31

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Solution

The fourth proportional to 66,300.80, 91,495.85 and 36,086.31 is: 49,799.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,300.80 : 91,495.85 = 36,086.31 : x
  2. Step 2: Convert to fraction form
    66,300.80/91,495.85 = 36,086.31/x
  3. Step 3: Cross multiply
    66,300.80x = 91,495.85 × 36,086.31
  4. Step 4: Simplify right side
    66,300.80x = 3,301,747,426.38
  5. Step 5: Solve for x
    x = 3,301,747,426.38/66,300.80
  6. Step 6: Final answer
    x = 49,799.51

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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.