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Finding the Fourth Proportional to 79,280.70, 118,938.54 and 23,125.20

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Solution

The fourth proportional to 79,280.70, 118,938.54 and 23,125.20 is: 34,692.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,280.70 : 118,938.54 = 23,125.20 : x
  2. Step 2: Convert to fraction form
    79,280.70/118,938.54 = 23,125.20/x
  3. Step 3: Cross multiply
    79,280.70x = 118,938.54 × 23,125.20
  4. Step 4: Simplify right side
    79,280.70x = 2,750,478,057.95
  5. Step 5: Solve for x
    x = 2,750,478,057.95/79,280.70
  6. Step 6: Final answer
    x = 34,692.91

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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.