Home / 66,610.31-99,986.59-28,678.36

Finding the Fourth Proportional to 66,610.31, 99,986.59 and 28,678.36

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Solution

The fourth proportional to 66,610.31, 99,986.59 and 28,678.36 is: 43,048.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,610.31 : 99,986.59 = 28,678.36 : x
  2. Step 2: Convert to fraction form
    66,610.31/99,986.59 = 28,678.36/x
  3. Step 3: Cross multiply
    66,610.31x = 99,986.59 × 28,678.36
  4. Step 4: Simplify right side
    66,610.31x = 2,867,451,235.23
  5. Step 5: Solve for x
    x = 2,867,451,235.23/66,610.31
  6. Step 6: Final answer
    x = 43,048.16

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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.