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Finding the Fourth Proportional to 90,616, 125,050.08 and 50,872

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Solution

The fourth proportional to 90,616, 125,050.08 and 50,872 is: 70,203.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,616 : 125,050.08 = 50,872 : x
  2. Step 2: Convert to fraction form
    90,616/125,050.08 = 50,872/x
  3. Step 3: Cross multiply
    90,616x = 125,050.08 × 50,872
  4. Step 4: Simplify right side
    90,616x = 6,361,547,669.76
  5. Step 5: Solve for x
    x = 6,361,547,669.76/90,616
  6. Step 6: Final answer
    x = 70,203.36

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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.