Home / 91,102.55-125,721.72-50,815.28

Finding the Fourth Proportional to 91,102.55, 125,721.72 and 50,815.28

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Solution

The fourth proportional to 91,102.55, 125,721.72 and 50,815.28 is: 70,125.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,102.55 : 125,721.72 = 50,815.28 : x
  2. Step 2: Convert to fraction form
    91,102.55/125,721.72 = 50,815.28/x
  3. Step 3: Cross multiply
    91,102.55x = 125,721.72 × 50,815.28
  4. Step 4: Simplify right side
    91,102.55x = 6,388,584,403.88
  5. Step 5: Solve for x
    x = 6,388,584,403.88/91,102.55
  6. Step 6: Final answer
    x = 70,125.20

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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.