Home / 66,318.78-99,478.18-21,933.62

Finding the Fourth Proportional to 66,318.78, 99,478.18 and 21,933.62

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Solution

The fourth proportional to 66,318.78, 99,478.18 and 21,933.62 is: 32,900.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,318.78 : 99,478.18 = 21,933.62 : x
  2. Step 2: Convert to fraction form
    66,318.78/99,478.18 = 21,933.62/x
  3. Step 3: Cross multiply
    66,318.78x = 99,478.18 × 21,933.62
  4. Step 4: Simplify right side
    66,318.78x = 2,181,916,598.41
  5. Step 5: Solve for x
    x = 2,181,916,598.41/66,318.78
  6. Step 6: Final answer
    x = 32,900.43

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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.