Home / 81,626.20-112,636.38-45,808

Finding the Fourth Proportional to 81,626.20, 112,636.38 and 45,808

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Solution

The fourth proportional to 81,626.20, 112,636.38 and 45,808 is: 63,210.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,626.20 : 112,636.38 = 45,808 : x
  2. Step 2: Convert to fraction form
    81,626.20/112,636.38 = 45,808/x
  3. Step 3: Cross multiply
    81,626.20x = 112,636.38 × 45,808
  4. Step 4: Simplify right side
    81,626.20x = 5,159,647,295.04
  5. Step 5: Solve for x
    x = 5,159,647,295.04/81,626.20
  6. Step 6: Final answer
    x = 63,210.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.