Home / 78,829.21-118,240.48-36,694.81

Finding the Fourth Proportional to 78,829.21, 118,240.48 and 36,694.81

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Solution

The fourth proportional to 78,829.21, 118,240.48 and 36,694.81 is: 55,040.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,829.21 : 118,240.48 = 36,694.81 : x
  2. Step 2: Convert to fraction form
    78,829.21/118,240.48 = 36,694.81/x
  3. Step 3: Cross multiply
    78,829.21x = 118,240.48 × 36,694.81
  4. Step 4: Simplify right side
    78,829.21x = 4,338,811,947.91
  5. Step 5: Solve for x
    x = 4,338,811,947.91/78,829.21
  6. Step 6: Final answer
    x = 55,040.66

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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.