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Finding the Fourth Proportional to 90,801.78, 136,241.85 and 34,658.76

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Solution

The fourth proportional to 90,801.78, 136,241.85 and 34,658.76 is: 52,003.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,801.78 : 136,241.85 = 34,658.76 : x
  2. Step 2: Convert to fraction form
    90,801.78/136,241.85 = 34,658.76/x
  3. Step 3: Cross multiply
    90,801.78x = 136,241.85 × 34,658.76
  4. Step 4: Simplify right side
    90,801.78x = 4,721,973,581.11
  5. Step 5: Solve for x
    x = 4,721,973,581.11/90,801.78
  6. Step 6: Final answer
    x = 52,003.09

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1.5x scale

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.