Home / 78,217.96-117,323.10-25,620.52

Finding the Fourth Proportional to 78,217.96, 117,323.10 and 25,620.52

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Solution

The fourth proportional to 78,217.96, 117,323.10 and 25,620.52 is: 38,429.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,217.96 : 117,323.10 = 25,620.52 : x
  2. Step 2: Convert to fraction form
    78,217.96/117,323.10 = 25,620.52/x
  3. Step 3: Cross multiply
    78,217.96x = 117,323.10 × 25,620.52
  4. Step 4: Simplify right side
    78,217.96x = 3,005,878,830.01
  5. Step 5: Solve for x
    x = 3,005,878,830.01/78,217.96
  6. Step 6: Final answer
    x = 38,429.52

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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.