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Finding the Fourth Proportional to 68,295,622.80, 102,490,673.40 and 49,140,127.20

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Solution

The fourth proportional to 68,295,622.80, 102,490,673.40 and 49,140,127.20 is: 73,744,180.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,295,622.80 : 102,490,673.40 = 49,140,127.20 : x
  2. Step 2: Convert to fraction form
    68,295,622.80/102,490,673.40 = 49,140,127.20/x
  3. Step 3: Cross multiply
    68,295,622.80x = 102,490,673.40 × 49,140,127.20
  4. Step 4: Simplify right side
    68,295,622.80x = 5,036,404,727,689,657
  5. Step 5: Solve for x
    x = 5,036,404,727,689,657/68,295,622.80
  6. Step 6: Final answer
    x = 73,744,180.39

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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.