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Finding the Fourth Proportional to 66,478.19, 91,738.23 and 36,264.20

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Solution

The fourth proportional to 66,478.19, 91,738.23 and 36,264.20 is: 50,043.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,478.19 : 91,738.23 = 36,264.20 : x
  2. Step 2: Convert to fraction form
    66,478.19/91,738.23 = 36,264.20/x
  3. Step 3: Cross multiply
    66,478.19x = 91,738.23 × 36,264.20
  4. Step 4: Simplify right side
    66,478.19x = 3,326,813,520.37
  5. Step 5: Solve for x
    x = 3,326,813,520.37/66,478.19
  6. Step 6: Final answer
    x = 50,043.68

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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.