Home / 89,964.55-135,029.13-45,621.91

Finding the Fourth Proportional to 89,964.55, 135,029.13 and 45,621.91

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Solution

The fourth proportional to 89,964.55, 135,029.13 and 45,621.91 is: 68,474.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,964.55 : 135,029.13 = 45,621.91 : x
  2. Step 2: Convert to fraction form
    89,964.55/135,029.13 = 45,621.91/x
  3. Step 3: Cross multiply
    89,964.55x = 135,029.13 × 45,621.91
  4. Step 4: Simplify right side
    89,964.55x = 6,160,286,816.24
  5. Step 5: Solve for x
    x = 6,160,286,816.24/89,964.55
  6. Step 6: Final answer
    x = 68,474.60

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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.