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Finding the Fourth Proportional to 71,504,658.77, 107,257,984.90 and 20,386,677.58

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Solution

The fourth proportional to 71,504,658.77, 107,257,984.90 and 20,386,677.58 is: 30,580,300.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,504,658.77 : 107,257,984.90 = 20,386,677.58 : x
  2. Step 2: Convert to fraction form
    71,504,658.77/107,257,984.90 = 20,386,677.58/x
  3. Step 3: Cross multiply
    71,504,658.77x = 107,257,984.90 × 20,386,677.58
  4. Step 4: Simplify right side
    71,504,658.77x = 2,186,633,955,832,270
  5. Step 5: Solve for x
    x = 2,186,633,955,832,270/71,504,658.77
  6. Step 6: Final answer
    x = 30,580,300.55

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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.