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Finding the Fourth Proportional to 90,370.60, 135,529.98 and 34,953.64

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Solution

The fourth proportional to 90,370.60, 135,529.98 and 34,953.64 is: 52,420.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,370.60 : 135,529.98 = 34,953.64 : x
  2. Step 2: Convert to fraction form
    90,370.60/135,529.98 = 34,953.64/x
  3. Step 3: Cross multiply
    90,370.60x = 135,529.98 × 34,953.64
  4. Step 4: Simplify right side
    90,370.60x = 4,737,266,130.13
  5. Step 5: Solve for x
    x = 4,737,266,130.13/90,370.60
  6. Step 6: Final answer
    x = 52,420.43

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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.