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Finding the Fourth Proportional to 66,366.60, 99,549.90 and 21,994.80

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Solution

The fourth proportional to 66,366.60, 99,549.90 and 21,994.80 is: 32,992.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,366.60 : 99,549.90 = 21,994.80 : x
  2. Step 2: Convert to fraction form
    66,366.60/99,549.90 = 21,994.80/x
  3. Step 3: Cross multiply
    66,366.60x = 99,549.90 × 21,994.80
  4. Step 4: Simplify right side
    66,366.60x = 2,189,580,140.52
  5. Step 5: Solve for x
    x = 2,189,580,140.52/66,366.60
  6. Step 6: Final answer
    x = 32,992.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.