Home / 65,719.50-98,579.79-18,972.78

Finding the Fourth Proportional to 65,719.50, 98,579.79 and 18,972.78

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Solution

The fourth proportional to 65,719.50, 98,579.79 and 18,972.78 is: 28,459.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,719.50 : 98,579.79 = 18,972.78 : x
  2. Step 2: Convert to fraction form
    65,719.50/98,579.79 = 18,972.78/x
  3. Step 3: Cross multiply
    65,719.50x = 98,579.79 × 18,972.78
  4. Step 4: Simplify right side
    65,719.50x = 1,870,332,668.12
  5. Step 5: Solve for x
    x = 1,870,332,668.12/65,719.50
  6. Step 6: Final answer
    x = 28,459.33

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1.5x scale

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.