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Finding the Fourth Proportional to 86,022.54, 128,861.28 and 43,900.92

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Solution

The fourth proportional to 86,022.54, 128,861.28 and 43,900.92 is: 65,763.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,022.54 : 128,861.28 = 43,900.92 : x
  2. Step 2: Convert to fraction form
    86,022.54/128,861.28 = 43,900.92/x
  3. Step 3: Cross multiply
    86,022.54x = 128,861.28 × 43,900.92
  4. Step 4: Simplify right side
    86,022.54x = 5,657,128,744.38
  5. Step 5: Solve for x
    x = 5,657,128,744.38/86,022.54
  6. Step 6: Final answer
    x = 65,763.33

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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.