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Finding the Fourth Proportional to 90,699.93, 125,165.79 and 50,412.42

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Solution

The fourth proportional to 90,699.93, 125,165.79 and 50,412.42 is: 69,569.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,699.93 : 125,165.79 = 50,412.42 : x
  2. Step 2: Convert to fraction form
    90,699.93/125,165.79 = 50,412.42/x
  3. Step 3: Cross multiply
    90,699.93x = 125,165.79 × 50,412.42
  4. Step 4: Simplify right side
    90,699.93x = 6,309,910,375.11
  5. Step 5: Solve for x
    x = 6,309,910,375.11/90,699.93
  6. Step 6: Final answer
    x = 69,569.08

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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.