Home / 105,396.35-145,448.10-57,648.65

Finding the Fourth Proportional to 105,396.35, 145,448.10 and 57,648.65

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Solution

The fourth proportional to 105,396.35, 145,448.10 and 57,648.65 is: 79,555.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,396.35 : 145,448.10 = 57,648.65 : x
  2. Step 2: Convert to fraction form
    105,396.35/145,448.10 = 57,648.65/x
  3. Step 3: Cross multiply
    105,396.35x = 145,448.10 × 57,648.65
  4. Step 4: Simplify right side
    105,396.35x = 8,384,885,882.82
  5. Step 5: Solve for x
    x = 8,384,885,882.82/105,396.35
  6. Step 6: Final answer
    x = 79,555.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.