Home / 66,641.29-99,912.55-40,339.81

Finding the Fourth Proportional to 66,641.29, 99,912.55 and 40,339.81

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Solution

The fourth proportional to 66,641.29, 99,912.55 and 40,339.81 is: 60,479.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,641.29 : 99,912.55 = 40,339.81 : x
  2. Step 2: Convert to fraction form
    66,641.29/99,912.55 = 40,339.81/x
  3. Step 3: Cross multiply
    66,641.29x = 99,912.55 × 40,339.81
  4. Step 4: Simplify right side
    66,641.29x = 4,030,453,283.62
  5. Step 5: Solve for x
    x = 4,030,453,283.62/66,641.29
  6. Step 6: Final answer
    x = 60,479.82

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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.