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Finding the Fourth Proportional to 90,687.36, 125,148 and 50,400.48

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Solution

The fourth proportional to 90,687.36, 125,148 and 50,400.48 is: 69,552.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,687.36 : 125,148 = 50,400.48 : x
  2. Step 2: Convert to fraction form
    90,687.36/125,148 = 50,400.48/x
  3. Step 3: Cross multiply
    90,687.36x = 125,148 × 50,400.48
  4. Step 4: Simplify right side
    90,687.36x = 6,307,519,271.04
  5. Step 5: Solve for x
    x = 6,307,519,271.04/90,687.36
  6. Step 6: Final answer
    x = 69,552.35

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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.