Home / 42,758.87-64,145.19-13,176.69

Finding the Fourth Proportional to 42,758.87, 64,145.19 and 13,176.69

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Solution

The fourth proportional to 42,758.87, 64,145.19 and 13,176.69 is: 19,767.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,758.87 : 64,145.19 = 13,176.69 : x
  2. Step 2: Convert to fraction form
    42,758.87/64,145.19 = 13,176.69/x
  3. Step 3: Cross multiply
    42,758.87x = 64,145.19 × 13,176.69
  4. Step 4: Simplify right side
    42,758.87x = 845,221,043.08
  5. Step 5: Solve for x
    x = 845,221,043.08/42,758.87
  6. Step 6: Final answer
    x = 19,767.15

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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.