Home / 69,721.60-104,519.04-28,140.16

Finding the Fourth Proportional to 69,721.60, 104,519.04 and 28,140.16

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Solution

The fourth proportional to 69,721.60, 104,519.04 and 28,140.16 is: 42,184.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,721.60 : 104,519.04 = 28,140.16 : x
  2. Step 2: Convert to fraction form
    69,721.60/104,519.04 = 28,140.16/x
  3. Step 3: Cross multiply
    69,721.60x = 104,519.04 × 28,140.16
  4. Step 4: Simplify right side
    69,721.60x = 2,941,182,508.65
  5. Step 5: Solve for x
    x = 2,941,182,508.65/69,721.60
  6. Step 6: Final answer
    x = 42,184.67

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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.