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Finding the Fourth Proportional to 66,245.91, 99,202.69 and 39,575.45

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Solution

The fourth proportional to 66,245.91, 99,202.69 and 39,575.45 is: 59,263.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,245.91 : 99,202.69 = 39,575.45 : x
  2. Step 2: Convert to fraction form
    66,245.91/99,202.69 = 39,575.45/x
  3. Step 3: Cross multiply
    66,245.91x = 99,202.69 × 39,575.45
  4. Step 4: Simplify right side
    66,245.91x = 3,925,991,097.96
  5. Step 5: Solve for x
    x = 3,925,991,097.96/66,245.91
  6. Step 6: Final answer
    x = 59,263.90

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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.