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Finding the Fourth Proportional to 83,003,985.70, 124,505,978.55 and 25,496,164.60

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Solution

The fourth proportional to 83,003,985.70, 124,505,978.55 and 25,496,164.60 is: 38,244,246.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,003,985.70 : 124,505,978.55 = 25,496,164.60 : x
  2. Step 2: Convert to fraction form
    83,003,985.70/124,505,978.55 = 25,496,164.60/x
  3. Step 3: Cross multiply
    83,003,985.70x = 124,505,978.55 × 25,496,164.60
  4. Step 4: Simplify right side
    83,003,985.70x = 3,174,424,922,794,869.50
  5. Step 5: Solve for x
    x = 3,174,424,922,794,869.50/83,003,985.70
  6. Step 6: Final answer
    x = 38,244,246.90

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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.