Home / 85,993.12-128,995.37-22,812.36

Finding the Fourth Proportional to 85,993.12, 128,995.37 and 22,812.36

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Solution

The fourth proportional to 85,993.12, 128,995.37 and 22,812.36 is: 34,220.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,993.12 : 128,995.37 = 22,812.36 : x
  2. Step 2: Convert to fraction form
    85,993.12/128,995.37 = 22,812.36/x
  3. Step 3: Cross multiply
    85,993.12x = 128,995.37 × 22,812.36
  4. Step 4: Simplify right side
    85,993.12x = 2,942,688,306.53
  5. Step 5: Solve for x
    x = 2,942,688,306.53/85,993.12
  6. Step 6: Final answer
    x = 34,220.04

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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.