Home / 66,439.72-99,546.81-40,089.10

Finding the Fourth Proportional to 66,439.72, 99,546.81 and 40,089.10

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Solution

The fourth proportional to 66,439.72, 99,546.81 and 40,089.10 is: 60,065.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,439.72 : 99,546.81 = 40,089.10 : x
  2. Step 2: Convert to fraction form
    66,439.72/99,546.81 = 40,089.10/x
  3. Step 3: Cross multiply
    66,439.72x = 99,546.81 × 40,089.10
  4. Step 4: Simplify right side
    66,439.72x = 3,990,742,020.77
  5. Step 5: Solve for x
    x = 3,990,742,020.77/66,439.72
  6. Step 6: Final answer
    x = 60,065.61

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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.