Home / 78,988.76-118,417.53-55,228.37

Finding the Fourth Proportional to 78,988.76, 118,417.53 and 55,228.37

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Solution

The fourth proportional to 78,988.76, 118,417.53 and 55,228.37 is: 82,796.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,988.76 : 118,417.53 = 55,228.37 : x
  2. Step 2: Convert to fraction form
    78,988.76/118,417.53 = 55,228.37/x
  3. Step 3: Cross multiply
    78,988.76x = 118,417.53 × 55,228.37
  4. Step 4: Simplify right side
    78,988.76x = 6,540,007,161.33
  5. Step 5: Solve for x
    x = 6,540,007,161.33/78,988.76
  6. Step 6: Final answer
    x = 82,796.68

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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.