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Finding the Fourth Proportional to 90,602.72, 135,920.76 and 29,816.42

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Solution

The fourth proportional to 90,602.72, 135,920.76 and 29,816.42 is: 44,730.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,602.72 : 135,920.76 = 29,816.42 : x
  2. Step 2: Convert to fraction form
    90,602.72/135,920.76 = 29,816.42/x
  3. Step 3: Cross multiply
    90,602.72x = 135,920.76 × 29,816.42
  4. Step 4: Simplify right side
    90,602.72x = 4,052,670,466.88
  5. Step 5: Solve for x
    x = 4,052,670,466.88/90,602.72
  6. Step 6: Final answer
    x = 44,730.12

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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.