Home / 81,605,677.60-122,408,516.40-21,021,403.60

Finding the Fourth Proportional to 81,605,677.60, 122,408,516.40 and 21,021,403.60

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Solution

The fourth proportional to 81,605,677.60, 122,408,516.40 and 21,021,403.60 is: 31,532,105.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,605,677.60 : 122,408,516.40 = 21,021,403.60 : x
  2. Step 2: Convert to fraction form
    81,605,677.60/122,408,516.40 = 21,021,403.60/x
  3. Step 3: Cross multiply
    81,605,677.60x = 122,408,516.40 × 21,021,403.60
  4. Step 4: Simplify right side
    81,605,677.60x = 2,573,198,827,321,619.50
  5. Step 5: Solve for x
    x = 2,573,198,827,321,619.50/81,605,677.60
  6. Step 6: Final answer
    x = 31,532,105.40

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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.