Home / 84,515,729.60-126,868,072.80-65,431,092.80

Finding the Fourth Proportional to 84,515,729.60, 126,868,072.80 and 65,431,092.80

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Solution

The fourth proportional to 84,515,729.60, 126,868,072.80 and 65,431,092.80 is: 98,219,783.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,515,729.60 : 126,868,072.80 = 65,431,092.80 : x
  2. Step 2: Convert to fraction form
    84,515,729.60/126,868,072.80 = 65,431,092.80/x
  3. Step 3: Cross multiply
    84,515,729.60x = 126,868,072.80 × 65,431,092.80
  4. Step 4: Simplify right side
    84,515,729.60x = 8,301,116,644,733,955
  5. Step 5: Solve for x
    x = 8,301,116,644,733,955/84,515,729.60
  6. Step 6: Final answer
    x = 98,219,783.28

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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.