Home / 40,700.90-61,048.31-12,621.17

Finding the Fourth Proportional to 40,700.90, 61,048.31 and 12,621.17

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Solution

The fourth proportional to 40,700.90, 61,048.31 and 12,621.17 is: 18,930.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,700.90 : 61,048.31 = 12,621.17 : x
  2. Step 2: Convert to fraction form
    40,700.90/61,048.31 = 12,621.17/x
  3. Step 3: Cross multiply
    40,700.90x = 61,048.31 × 12,621.17
  4. Step 4: Simplify right side
    40,700.90x = 770,500,730.38
  5. Step 5: Solve for x
    x = 770,500,730.38/40,700.90
  6. Step 6: Final answer
    x = 18,930.81

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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.