Home / 80,313.42-120,389.91-53,681.83

Finding the Fourth Proportional to 80,313.42, 120,389.91 and 53,681.83

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Solution

The fourth proportional to 80,313.42, 120,389.91 and 53,681.83 is: 80,469.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,313.42 : 120,389.91 = 53,681.83 : x
  2. Step 2: Convert to fraction form
    80,313.42/120,389.91 = 53,681.83/x
  3. Step 3: Cross multiply
    80,313.42x = 120,389.91 × 53,681.83
  4. Step 4: Simplify right side
    80,313.42x = 6,462,750,682.34
  5. Step 5: Solve for x
    x = 6,462,750,682.34/80,313.42
  6. Step 6: Final answer
    x = 80,469.13

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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.