Home / 75,904.11-113,855.93-20,500.11

Finding the Fourth Proportional to 75,904.11, 113,855.93 and 20,500.11

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Solution

The fourth proportional to 75,904.11, 113,855.93 and 20,500.11 is: 30,750.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,904.11 : 113,855.93 = 20,500.11 : x
  2. Step 2: Convert to fraction form
    75,904.11/113,855.93 = 20,500.11/x
  3. Step 3: Cross multiply
    75,904.11x = 113,855.93 × 20,500.11
  4. Step 4: Simplify right side
    75,904.11x = 2,334,058,986.65
  5. Step 5: Solve for x
    x = 2,334,058,986.65/75,904.11
  6. Step 6: Final answer
    x = 30,750.10

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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.