Home / 72,448,345.80-108,798,489.90-38,436,121.80

Finding the Fourth Proportional to 72,448,345.80, 108,798,489.90 and 38,436,121.80

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Solution

The fourth proportional to 72,448,345.80, 108,798,489.90 and 38,436,121.80 is: 57,721,014.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,448,345.80 : 108,798,489.90 = 38,436,121.80 : x
  2. Step 2: Convert to fraction form
    72,448,345.80/108,798,489.90 = 38,436,121.80/x
  3. Step 3: Cross multiply
    72,448,345.80x = 108,798,489.90 × 38,436,121.80
  4. Step 4: Simplify right side
    72,448,345.80x = 4,181,792,009,452,469.50
  5. Step 5: Solve for x
    x = 4,181,792,009,452,469.50/72,448,345.80
  6. Step 6: Final answer
    x = 57,721,014.38

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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.