Home / 66,120-91,253.92-40,973.28

Finding the Fourth Proportional to 66,120, 91,253.92 and 40,973.28

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Solution

The fourth proportional to 66,120, 91,253.92 and 40,973.28 is: 56,548.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,120 : 91,253.92 = 40,973.28 : x
  2. Step 2: Convert to fraction form
    66,120/91,253.92 = 40,973.28/x
  3. Step 3: Cross multiply
    66,120x = 91,253.92 × 40,973.28
  4. Step 4: Simplify right side
    66,120x = 3,738,972,415.26
  5. Step 5: Solve for x
    x = 3,738,972,415.26/66,120
  6. Step 6: Final answer
    x = 56,548.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.