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Finding the Fourth Proportional to 90,592, 125,031.88 and 50,318.80

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Solution

The fourth proportional to 90,592, 125,031.88 and 50,318.80 is: 69,448.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,592 : 125,031.88 = 50,318.80 : x
  2. Step 2: Convert to fraction form
    90,592/125,031.88 = 50,318.80/x
  3. Step 3: Cross multiply
    90,592x = 125,031.88 × 50,318.80
  4. Step 4: Simplify right side
    90,592x = 6,291,454,163.34
  5. Step 5: Solve for x
    x = 6,291,454,163.34/90,592
  6. Step 6: Final answer
    x = 69,448.23

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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.