Home / 66,615.18-99,940.86-29,178.60

Finding the Fourth Proportional to 66,615.18, 99,940.86 and 29,178.60

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Solution

The fourth proportional to 66,615.18, 99,940.86 and 29,178.60 is: 43,775.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,615.18 : 99,940.86 = 29,178.60 : x
  2. Step 2: Convert to fraction form
    66,615.18/99,940.86 = 29,178.60/x
  3. Step 3: Cross multiply
    66,615.18x = 99,940.86 × 29,178.60
  4. Step 4: Simplify right side
    66,615.18x = 2,916,134,377.60
  5. Step 5: Solve for x
    x = 2,916,134,377.60/66,615.18
  6. Step 6: Final answer
    x = 43,775.82

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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.