Home / 72,065,858.39-108,101,777.13-20,947,877.19

Finding the Fourth Proportional to 72,065,858.39, 108,101,777.13 and 20,947,877.19

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Solution

The fourth proportional to 72,065,858.39, 108,101,777.13 and 20,947,877.19 is: 31,422,684.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,065,858.39 : 108,101,777.13 = 20,947,877.19 : x
  2. Step 2: Convert to fraction form
    72,065,858.39/108,101,777.13 = 20,947,877.19/x
  3. Step 3: Cross multiply
    72,065,858.39x = 108,101,777.13 × 20,947,877.19
  4. Step 4: Simplify right side
    72,065,858.39x = 2,264,502,751,339,990.50
  5. Step 5: Solve for x
    x = 2,264,502,751,339,990.50/72,065,858.39
  6. Step 6: Final answer
    x = 31,422,684.78

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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.