Home / 66,435.72-99,540.83-40,085.12

Finding the Fourth Proportional to 66,435.72, 99,540.83 and 40,085.12

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Solution

The fourth proportional to 66,435.72, 99,540.83 and 40,085.12 is: 60,059.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,435.72 : 99,540.83 = 40,085.12 : x
  2. Step 2: Convert to fraction form
    66,435.72/99,540.83 = 40,085.12/x
  3. Step 3: Cross multiply
    66,435.72x = 99,540.83 × 40,085.12
  4. Step 4: Simplify right side
    66,435.72x = 3,990,105,417.32
  5. Step 5: Solve for x
    x = 3,990,105,417.32/66,435.72
  6. Step 6: Final answer
    x = 60,059.64

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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.