Home / 85,947.35-128,918.18-35,344.62

Finding the Fourth Proportional to 85,947.35, 128,918.18 and 35,344.62

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Solution

The fourth proportional to 85,947.35, 128,918.18 and 35,344.62 is: 53,015.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,947.35 : 128,918.18 = 35,344.62 : x
  2. Step 2: Convert to fraction form
    85,947.35/128,918.18 = 35,344.62/x
  3. Step 3: Cross multiply
    85,947.35x = 128,918.18 × 35,344.62
  4. Step 4: Simplify right side
    85,947.35x = 4,556,563,906.47
  5. Step 5: Solve for x
    x = 4,556,563,906.47/85,947.35
  6. Step 6: Final answer
    x = 53,015.76

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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.