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Finding the Fourth Proportional to 66,278.25, 91,463.99 and 36,470.25

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Solution

The fourth proportional to 66,278.25, 91,463.99 and 36,470.25 is: 50,328.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,278.25 : 91,463.99 = 36,470.25 : x
  2. Step 2: Convert to fraction form
    66,278.25/91,463.99 = 36,470.25/x
  3. Step 3: Cross multiply
    66,278.25x = 91,463.99 × 36,470.25
  4. Step 4: Simplify right side
    66,278.25x = 3,335,714,398.95
  5. Step 5: Solve for x
    x = 3,335,714,398.95/66,278.25
  6. Step 6: Final answer
    x = 50,328.95

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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.