Home / 40,665.05-61,000.42-12,581.40

Finding the Fourth Proportional to 40,665.05, 61,000.42 and 12,581.40

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Solution

The fourth proportional to 40,665.05, 61,000.42 and 12,581.40 is: 18,872.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,665.05 : 61,000.42 = 12,581.40 : x
  2. Step 2: Convert to fraction form
    40,665.05/61,000.42 = 12,581.40/x
  3. Step 3: Cross multiply
    40,665.05x = 61,000.42 × 12,581.40
  4. Step 4: Simplify right side
    40,665.05x = 767,470,652.73
  5. Step 5: Solve for x
    x = 767,470,652.73/40,665.05
  6. Step 6: Final answer
    x = 18,872.98

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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.