Home / 91,172.80-125,829.84-55,360.48

Finding the Fourth Proportional to 91,172.80, 125,829.84 and 55,360.48

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Solution

The fourth proportional to 91,172.80, 125,829.84 and 55,360.48 is: 76,404.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,172.80 : 125,829.84 = 55,360.48 : x
  2. Step 2: Convert to fraction form
    91,172.80/125,829.84 = 55,360.48/x
  3. Step 3: Cross multiply
    91,172.80x = 125,829.84 × 55,360.48
  4. Step 4: Simplify right side
    91,172.80x = 6,966,000,340.72
  5. Step 5: Solve for x
    x = 6,966,000,340.72/91,172.80
  6. Step 6: Final answer
    x = 76,404.37

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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.