Home / 91,102.59-125,721.76-50,815.31

Finding the Fourth Proportional to 91,102.59, 125,721.76 and 50,815.31

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Solution

The fourth proportional to 91,102.59, 125,721.76 and 50,815.31 is: 70,125.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,102.59 : 125,721.76 = 50,815.31 : x
  2. Step 2: Convert to fraction form
    91,102.59/125,721.76 = 50,815.31/x
  3. Step 3: Cross multiply
    91,102.59x = 125,721.76 × 50,815.31
  4. Step 4: Simplify right side
    91,102.59x = 6,388,590,208.15
  5. Step 5: Solve for x
    x = 6,388,590,208.15/91,102.59
  6. Step 6: Final answer
    x = 70,125.23

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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.