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Finding the Fourth Proportional to 68,987,279.20, 103,480,918.80 and 63,413,442.40

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Solution

The fourth proportional to 68,987,279.20, 103,480,918.80 and 63,413,442.40 is: 95,120,163.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,987,279.20 : 103,480,918.80 = 63,413,442.40 : x
  2. Step 2: Convert to fraction form
    68,987,279.20/103,480,918.80 = 63,413,442.40/x
  3. Step 3: Cross multiply
    68,987,279.20x = 103,480,918.80 × 63,413,442.40
  4. Step 4: Simplify right side
    68,987,279.20x = 6,562,081,283,822,877
  5. Step 5: Solve for x
    x = 6,562,081,283,822,877/68,987,279.20
  6. Step 6: Final answer
    x = 95,120,163.60

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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.