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Finding the Fourth Proportional to 71,952,806.25, 107,929,227.80 and 20,145,041.48

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Solution

The fourth proportional to 71,952,806.25, 107,929,227.80 and 20,145,041.48 is: 30,217,567.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,952,806.25 : 107,929,227.80 = 20,145,041.48 : x
  2. Step 2: Convert to fraction form
    71,952,806.25/107,929,227.80 = 20,145,041.48/x
  3. Step 3: Cross multiply
    71,952,806.25x = 107,929,227.80 × 20,145,041.48
  4. Step 4: Simplify right side
    71,952,806.25x = 2,174,238,771,255,555
  5. Step 5: Solve for x
    x = 2,174,238,771,255,555/71,952,806.25
  6. Step 6: Final answer
    x = 30,217,567.38

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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.