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Finding the Fourth Proportional to 78,982, 118,491.72 and 23,579.44

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Solution

The fourth proportional to 78,982, 118,491.72 and 23,579.44 is: 35,374.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,982 : 118,491.72 = 23,579.44 : x
  2. Step 2: Convert to fraction form
    78,982/118,491.72 = 23,579.44/x
  3. Step 3: Cross multiply
    78,982x = 118,491.72 × 23,579.44
  4. Step 4: Simplify right side
    78,982x = 2,793,968,402.24
  5. Step 5: Solve for x
    x = 2,793,968,402.24/78,982
  6. Step 6: Final answer
    x = 35,374.75

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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.