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Finding the Fourth Proportional to 91,293.78, 136,736.44 and 52,778.10

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Solution

The fourth proportional to 91,293.78, 136,736.44 and 52,778.10 is: 79,049.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,293.78 : 136,736.44 = 52,778.10 : x
  2. Step 2: Convert to fraction form
    91,293.78/136,736.44 = 52,778.10/x
  3. Step 3: Cross multiply
    91,293.78x = 136,736.44 × 52,778.10
  4. Step 4: Simplify right side
    91,293.78x = 7,216,689,503.96
  5. Step 5: Solve for x
    x = 7,216,689,503.96/91,293.78
  6. Step 6: Final answer
    x = 79,049.08

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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.