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Finding the Fourth Proportional to 89,089.90, 122,944.10 and 48,805.12

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Solution

The fourth proportional to 89,089.90, 122,944.10 and 48,805.12 is: 67,351.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,089.90 : 122,944.10 = 48,805.12 : x
  2. Step 2: Convert to fraction form
    89,089.90/122,944.10 = 48,805.12/x
  3. Step 3: Cross multiply
    89,089.90x = 122,944.10 × 48,805.12
  4. Step 4: Simplify right side
    89,089.90x = 6,000,301,675.80
  5. Step 5: Solve for x
    x = 6,000,301,675.80/89,089.90
  6. Step 6: Final answer
    x = 67,351.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.