Home / 71,157.03-106,719.81-20,545.06

Finding the Fourth Proportional to 71,157.03, 106,719.81 and 20,545.06

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Solution

The fourth proportional to 71,157.03, 106,719.81 and 20,545.06 is: 30,813.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,157.03 : 106,719.81 = 20,545.06 : x
  2. Step 2: Convert to fraction form
    71,157.03/106,719.81 = 20,545.06/x
  3. Step 3: Cross multiply
    71,157.03x = 106,719.81 × 20,545.06
  4. Step 4: Simplify right side
    71,157.03x = 2,192,564,899.64
  5. Step 5: Solve for x
    x = 2,192,564,899.64/71,157.03
  6. Step 6: Final answer
    x = 30,813.05

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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.