Home / 43,135.81-64,710.25-13,550.87

Finding the Fourth Proportional to 43,135.81, 64,710.25 and 13,550.87

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Solution

The fourth proportional to 43,135.81, 64,710.25 and 13,550.87 is: 20,328.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,135.81 : 64,710.25 = 13,550.87 : x
  2. Step 2: Convert to fraction form
    43,135.81/64,710.25 = 13,550.87/x
  3. Step 3: Cross multiply
    43,135.81x = 64,710.25 × 13,550.87
  4. Step 4: Simplify right side
    43,135.81x = 876,879,827.99
  5. Step 5: Solve for x
    x = 876,879,827.99/43,135.81
  6. Step 6: Final answer
    x = 20,328.35

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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.