Home / 43,138.78-64,682.65-16,812.80

Finding the Fourth Proportional to 43,138.78, 64,682.65 and 16,812.80

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Solution

The fourth proportional to 43,138.78, 64,682.65 and 16,812.80 is: 25,209.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,138.78 : 64,682.65 = 16,812.80 : x
  2. Step 2: Convert to fraction form
    43,138.78/64,682.65 = 16,812.80/x
  3. Step 3: Cross multiply
    43,138.78x = 64,682.65 × 16,812.80
  4. Step 4: Simplify right side
    43,138.78x = 1,087,496,457.92
  5. Step 5: Solve for x
    x = 1,087,496,457.92/43,138.78
  6. Step 6: Final answer
    x = 25,209.25

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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.