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Finding the Fourth Proportional to 86,997.65, 120,065.10 and 48,757.01

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Solution

The fourth proportional to 86,997.65, 120,065.10 and 48,757.01 is: 67,289.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,997.65 : 120,065.10 = 48,757.01 : x
  2. Step 2: Convert to fraction form
    86,997.65/120,065.10 = 48,757.01/x
  3. Step 3: Cross multiply
    86,997.65x = 120,065.10 × 48,757.01
  4. Step 4: Simplify right side
    86,997.65x = 5,854,015,281.35
  5. Step 5: Solve for x
    x = 5,854,015,281.35/86,997.65
  6. Step 6: Final answer
    x = 67,289.35

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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.