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Finding the Fourth Proportional to 78,830.54, 118,175.48 and 28,898.97

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Solution

The fourth proportional to 78,830.54, 118,175.48 and 28,898.97 is: 43,322.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,830.54 : 118,175.48 = 28,898.97 : x
  2. Step 2: Convert to fraction form
    78,830.54/118,175.48 = 28,898.97/x
  3. Step 3: Cross multiply
    78,830.54x = 118,175.48 × 28,898.97
  4. Step 4: Simplify right side
    78,830.54x = 3,415,150,084.17
  5. Step 5: Solve for x
    x = 3,415,150,084.17/78,830.54
  6. Step 6: Final answer
    x = 43,322.68

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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.