Home / 81,650,629.53-122,433,419.16-38,508,249.15

Finding the Fourth Proportional to 81,650,629.53, 122,433,419.16 and 38,508,249.15

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Solution

The fourth proportional to 81,650,629.53, 122,433,419.16 and 38,508,249.15 is: 57,742,317.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,650,629.53 : 122,433,419.16 = 38,508,249.15 : x
  2. Step 2: Convert to fraction form
    81,650,629.53/122,433,419.16 = 38,508,249.15/x
  3. Step 3: Cross multiply
    81,650,629.53x = 122,433,419.16 × 38,508,249.15
  4. Step 4: Simplify right side
    81,650,629.53x = 4,714,696,609,299,663
  5. Step 5: Solve for x
    x = 4,714,696,609,299,663/81,650,629.53
  6. Step 6: Final answer
    x = 57,742,317.93

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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.