Home / 66,731.18-100,121.88-34,690.28

Finding the Fourth Proportional to 66,731.18, 100,121.88 and 34,690.28

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Solution

The fourth proportional to 66,731.18, 100,121.88 and 34,690.28 is: 52,048.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,731.18 : 100,121.88 = 34,690.28 : x
  2. Step 2: Convert to fraction form
    66,731.18/100,121.88 = 34,690.28/x
  3. Step 3: Cross multiply
    66,731.18x = 100,121.88 × 34,690.28
  4. Step 4: Simplify right side
    66,731.18x = 3,473,256,051.33
  5. Step 5: Solve for x
    x = 3,473,256,051.33/66,731.18
  6. Step 6: Final answer
    x = 52,048.47

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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.