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Finding the Fourth Proportional to 91,175.78, 125,822.75 and 50,889.53

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Solution

The fourth proportional to 91,175.78, 125,822.75 and 50,889.53 is: 70,227.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,175.78 : 125,822.75 = 50,889.53 : x
  2. Step 2: Convert to fraction form
    91,175.78/125,822.75 = 50,889.53/x
  3. Step 3: Cross multiply
    91,175.78x = 125,822.75 × 50,889.53
  4. Step 4: Simplify right side
    91,175.78x = 6,403,060,670.92
  5. Step 5: Solve for x
    x = 6,403,060,670.92/91,175.78
  6. Step 6: Final answer
    x = 70,227.65

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1.5x scale

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.