Home / 78,747.36-118,143.86-25,447.47

Finding the Fourth Proportional to 78,747.36, 118,143.86 and 25,447.47

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Solution

The fourth proportional to 78,747.36, 118,143.86 and 25,447.47 is: 38,178.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,747.36 : 118,143.86 = 25,447.47 : x
  2. Step 2: Convert to fraction form
    78,747.36/118,143.86 = 25,447.47/x
  3. Step 3: Cross multiply
    78,747.36x = 118,143.86 × 25,447.47
  4. Step 4: Simplify right side
    78,747.36x = 3,006,462,205.80
  5. Step 5: Solve for x
    x = 3,006,462,205.80/78,747.36
  6. Step 6: Final answer
    x = 38,178.58

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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.