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Finding the Fourth Proportional to 86,469.28, 129,590.82 and 44,313.64

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Solution

The fourth proportional to 86,469.28, 129,590.82 and 44,313.64 is: 66,412.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,469.28 : 129,590.82 = 44,313.64 : x
  2. Step 2: Convert to fraction form
    86,469.28/129,590.82 = 44,313.64/x
  3. Step 3: Cross multiply
    86,469.28x = 129,590.82 × 44,313.64
  4. Step 4: Simplify right side
    86,469.28x = 5,742,640,944.78
  5. Step 5: Solve for x
    x = 5,742,640,944.78/86,469.28
  6. Step 6: Final answer
    x = 66,412.50

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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.