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Finding the Fourth Proportional to 90,992.95, 125,568.55 and 50,705.83

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Solution

The fourth proportional to 90,992.95, 125,568.55 and 50,705.83 is: 69,973.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,992.95 : 125,568.55 = 50,705.83 : x
  2. Step 2: Convert to fraction form
    90,992.95/125,568.55 = 50,705.83/x
  3. Step 3: Cross multiply
    90,992.95x = 125,568.55 × 50,705.83
  4. Step 4: Simplify right side
    90,992.95x = 6,367,057,108.96
  5. Step 5: Solve for x
    x = 6,367,057,108.96/90,992.95
  6. Step 6: Final answer
    x = 69,973.08

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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.