Home / 72,969,135.77-100,697,404.19-39,929,387.64

Finding the Fourth Proportional to 72,969,135.77, 100,697,404.19 and 39,929,387.64

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Solution

The fourth proportional to 72,969,135.77, 100,697,404.19 and 39,929,387.64 is: 55,102,553.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,969,135.77 : 100,697,404.19 = 39,929,387.64 : x
  2. Step 2: Convert to fraction form
    72,969,135.77/100,697,404.19 = 39,929,387.64/x
  3. Step 3: Cross multiply
    72,969,135.77x = 100,697,404.19 × 39,929,387.64
  4. Step 4: Simplify right side
    72,969,135.77x = 4,020,785,686,044,623.50
  5. Step 5: Solve for x
    x = 4,020,785,686,044,623.50/72,969,135.77
  6. Step 6: Final answer
    x = 55,102,553.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.