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Finding the Fourth Proportional to 78,732,654.80, 118,098,982.20 and 35,603,265.20

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Solution

The fourth proportional to 78,732,654.80, 118,098,982.20 and 35,603,265.20 is: 53,404,897.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,654.80 : 118,098,982.20 = 35,603,265.20 : x
  2. Step 2: Convert to fraction form
    78,732,654.80/118,098,982.20 = 35,603,265.20/x
  3. Step 3: Cross multiply
    78,732,654.80x = 118,098,982.20 × 35,603,265.20
  4. Step 4: Simplify right side
    78,732,654.80x = 4,204,709,383,116,680
  5. Step 5: Solve for x
    x = 4,204,709,383,116,680/78,732,654.80
  6. Step 6: Final answer
    x = 53,404,897.80

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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.