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Finding the Fourth Proportional to 91,255.66, 125,931.49 and 50,970

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Solution

The fourth proportional to 91,255.66, 125,931.49 and 50,970 is: 70,337.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,255.66 : 125,931.49 = 50,970 : x
  2. Step 2: Convert to fraction form
    91,255.66/125,931.49 = 50,970/x
  3. Step 3: Cross multiply
    91,255.66x = 125,931.49 × 50,970
  4. Step 4: Simplify right side
    91,255.66x = 6,418,728,045.30
  5. Step 5: Solve for x
    x = 6,418,728,045.30/91,255.66
  6. Step 6: Final answer
    x = 70,337.86

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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.