Home / 77,131.81-106,439.77-43,140.36

Finding the Fourth Proportional to 77,131.81, 106,439.77 and 43,140.36

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Solution

The fourth proportional to 77,131.81, 106,439.77 and 43,140.36 is: 59,532.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,131.81 : 106,439.77 = 43,140.36 : x
  2. Step 2: Convert to fraction form
    77,131.81/106,439.77 = 43,140.36/x
  3. Step 3: Cross multiply
    77,131.81x = 106,439.77 × 43,140.36
  4. Step 4: Simplify right side
    77,131.81x = 4,591,850,449.19
  5. Step 5: Solve for x
    x = 4,591,850,449.19/77,131.81
  6. Step 6: Final answer
    x = 59,532.51

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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.