Home / 71,763.24-107,636.40-19,176.78

Finding the Fourth Proportional to 71,763.24, 107,636.40 and 19,176.78

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Solution

The fourth proportional to 71,763.24, 107,636.40 and 19,176.78 is: 28,762.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,763.24 : 107,636.40 = 19,176.78 : x
  2. Step 2: Convert to fraction form
    71,763.24/107,636.40 = 19,176.78/x
  3. Step 3: Cross multiply
    71,763.24x = 107,636.40 × 19,176.78
  4. Step 4: Simplify right side
    71,763.24x = 2,064,119,562.79
  5. Step 5: Solve for x
    x = 2,064,119,562.79/71,763.24
  6. Step 6: Final answer
    x = 28,762.91

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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.