Home / 42,738.40-64,107.60-11,573.60

Finding the Fourth Proportional to 42,738.40, 64,107.60 and 11,573.60

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Solution

The fourth proportional to 42,738.40, 64,107.60 and 11,573.60 is: 17,360.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,738.40 : 64,107.60 = 11,573.60 : x
  2. Step 2: Convert to fraction form
    42,738.40/64,107.60 = 11,573.60/x
  3. Step 3: Cross multiply
    42,738.40x = 64,107.60 × 11,573.60
  4. Step 4: Simplify right side
    42,738.40x = 741,955,719.36
  5. Step 5: Solve for x
    x = 741,955,719.36/42,738.40
  6. Step 6: Final answer
    x = 17,360.40

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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.