Home / 78,841.18-118,277.35-28,921.74

Finding the Fourth Proportional to 78,841.18, 118,277.35 and 28,921.74

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Solution

The fourth proportional to 78,841.18, 118,277.35 and 28,921.74 is: 43,388.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,841.18 : 118,277.35 = 28,921.74 : x
  2. Step 2: Convert to fraction form
    78,841.18/118,277.35 = 28,921.74/x
  3. Step 3: Cross multiply
    78,841.18x = 118,277.35 × 28,921.74
  4. Step 4: Simplify right side
    78,841.18x = 3,420,786,764.59
  5. Step 5: Solve for x
    x = 3,420,786,764.59/78,841.18
  6. Step 6: Final answer
    x = 43,388.33

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1.5x scale

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.