Home / 85,736.16-128,643.12-44,212.32

Finding the Fourth Proportional to 85,736.16, 128,643.12 and 44,212.32

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Solution

The fourth proportional to 85,736.16, 128,643.12 and 44,212.32 is: 66,338.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,736.16 : 128,643.12 = 44,212.32 : x
  2. Step 2: Convert to fraction form
    85,736.16/128,643.12 = 44,212.32/x
  3. Step 3: Cross multiply
    85,736.16x = 128,643.12 × 44,212.32
  4. Step 4: Simplify right side
    85,736.16x = 5,687,610,787.24
  5. Step 5: Solve for x
    x = 5,687,610,787.24/85,736.16
  6. Step 6: Final answer
    x = 66,338.53

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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.