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Finding the Fourth Proportional to 66,498,456.70, 99,747,685.05 and 43,804,978.30

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Solution

The fourth proportional to 66,498,456.70, 99,747,685.05 and 43,804,978.30 is: 65,707,467.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,498,456.70 : 99,747,685.05 = 43,804,978.30 : x
  2. Step 2: Convert to fraction form
    66,498,456.70/99,747,685.05 = 43,804,978.30/x
  3. Step 3: Cross multiply
    66,498,456.70x = 99,747,685.05 × 43,804,978.30
  4. Step 4: Simplify right side
    66,498,456.70x = 4,369,445,179,090,484
  5. Step 5: Solve for x
    x = 4,369,445,179,090,484/66,498,456.70
  6. Step 6: Final answer
    x = 65,707,467.45

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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.