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Finding the Fourth Proportional to 42,649,454.70, 63,961,978.56 and 13,898,102.94

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Solution

The fourth proportional to 42,649,454.70, 63,961,978.56 and 13,898,102.94 is: 20,843,177.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,649,454.70 : 63,961,978.56 = 13,898,102.94 : x
  2. Step 2: Convert to fraction form
    42,649,454.70/63,961,978.56 = 13,898,102.94/x
  3. Step 3: Cross multiply
    42,649,454.70x = 63,961,978.56 × 13,898,102.94
  4. Step 4: Simplify right side
    42,649,454.70x = 888,950,162,272,953
  5. Step 5: Solve for x
    x = 888,950,162,272,953/42,649,454.70
  6. Step 6: Final answer
    x = 20,843,177.68

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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.