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Finding the Fourth Proportional to 67,756,877.20, 101,467,354.20 and 54,319,949.20

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Solution

The fourth proportional to 67,756,877.20, 101,467,354.20 and 54,319,949.20 is: 81,345,270.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,756,877.20 : 101,467,354.20 = 54,319,949.20 : x
  2. Step 2: Convert to fraction form
    67,756,877.20/101,467,354.20 = 54,319,949.20/x
  3. Step 3: Cross multiply
    67,756,877.20x = 101,467,354.20 × 54,319,949.20
  4. Step 4: Simplify right side
    67,756,877.20x = 5,511,701,525,602,407
  5. Step 5: Solve for x
    x = 5,511,701,525,602,407/67,756,877.20
  6. Step 6: Final answer
    x = 81,345,270.82

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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.