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Finding the Fourth Proportional to 90,603.48, 135,958.68 and 34,490.82

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Solution

The fourth proportional to 90,603.48, 135,958.68 and 34,490.82 is: 51,756.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,603.48 : 135,958.68 = 34,490.82 : x
  2. Step 2: Convert to fraction form
    90,603.48/135,958.68 = 34,490.82/x
  3. Step 3: Cross multiply
    90,603.48x = 135,958.68 × 34,490.82
  4. Step 4: Simplify right side
    90,603.48x = 4,689,326,359.32
  5. Step 5: Solve for x
    x = 4,689,326,359.32/90,603.48
  6. Step 6: Final answer
    x = 51,756.58

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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.