Home / 85,691.12-128,535.30-23,361.62

Finding the Fourth Proportional to 85,691.12, 128,535.30 and 23,361.62

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Solution

The fourth proportional to 85,691.12, 128,535.30 and 23,361.62 is: 35,042.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,691.12 : 128,535.30 = 23,361.62 : x
  2. Step 2: Convert to fraction form
    85,691.12/128,535.30 = 23,361.62/x
  3. Step 3: Cross multiply
    85,691.12x = 128,535.30 × 23,361.62
  4. Step 4: Simplify right side
    85,691.12x = 3,002,792,192.51
  5. Step 5: Solve for x
    x = 3,002,792,192.51/85,691.12
  6. Step 6: Final answer
    x = 35,042.05

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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.