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Finding the Fourth Proportional to 66,219.50, 91,384.70 and 36,006.84

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Solution

The fourth proportional to 66,219.50, 91,384.70 and 36,006.84 is: 49,690.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,219.50 : 91,384.70 = 36,006.84 : x
  2. Step 2: Convert to fraction form
    66,219.50/91,384.70 = 36,006.84/x
  3. Step 3: Cross multiply
    66,219.50x = 91,384.70 × 36,006.84
  4. Step 4: Simplify right side
    66,219.50x = 3,290,474,271.35
  5. Step 5: Solve for x
    x = 3,290,474,271.35/66,219.50
  6. Step 6: Final answer
    x = 49,690.41

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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.