Home / 42,758.70-64,145.07-13,176.54

Finding the Fourth Proportional to 42,758.70, 64,145.07 and 13,176.54

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Solution

The fourth proportional to 42,758.70, 64,145.07 and 13,176.54 is: 19,766.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,758.70 : 64,145.07 = 13,176.54 : x
  2. Step 2: Convert to fraction form
    42,758.70/64,145.07 = 13,176.54/x
  3. Step 3: Cross multiply
    42,758.70x = 64,145.07 × 13,176.54
  4. Step 4: Simplify right side
    42,758.70x = 845,210,080.66
  5. Step 5: Solve for x
    x = 845,210,080.66/42,758.70
  6. Step 6: Final answer
    x = 19,766.97

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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.