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Finding the Fourth Proportional to 90,799.88, 135,908.52 and 48,574.34

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Solution

The fourth proportional to 90,799.88, 135,908.52 and 48,574.34 is: 72,705.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,799.88 : 135,908.52 = 48,574.34 : x
  2. Step 2: Convert to fraction form
    90,799.88/135,908.52 = 48,574.34/x
  3. Step 3: Cross multiply
    90,799.88x = 135,908.52 × 48,574.34
  4. Step 4: Simplify right side
    90,799.88x = 6,601,666,659.38
  5. Step 5: Solve for x
    x = 6,601,666,659.38/90,799.88
  6. Step 6: Final answer
    x = 72,705.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.