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Finding the Fourth Proportional to 90,791.70, 136,187.55 and 48,801.30

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Solution

The fourth proportional to 90,791.70, 136,187.55 and 48,801.30 is: 73,201.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,791.70 : 136,187.55 = 48,801.30 : x
  2. Step 2: Convert to fraction form
    90,791.70/136,187.55 = 48,801.30/x
  3. Step 3: Cross multiply
    90,791.70x = 136,187.55 × 48,801.30
  4. Step 4: Simplify right side
    90,791.70x = 6,646,129,483.82
  5. Step 5: Solve for x
    x = 6,646,129,483.82/90,791.70
  6. Step 6: Final answer
    x = 73,201.95

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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.