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Finding the Fourth Proportional to 85,518.87, 128,301.81 and 35,622.33

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Solution

The fourth proportional to 85,518.87, 128,301.81 and 35,622.33 is: 53,443.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,518.87 : 128,301.81 = 35,622.33 : x
  2. Step 2: Convert to fraction form
    85,518.87/128,301.81 = 35,622.33/x
  3. Step 3: Cross multiply
    85,518.87x = 128,301.81 × 35,622.33
  4. Step 4: Simplify right side
    85,518.87x = 4,570,409,415.42
  5. Step 5: Solve for x
    x = 4,570,409,415.42/85,518.87
  6. Step 6: Final answer
    x = 53,443.29

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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.