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Finding the Fourth Proportional to 84,241,088, 126,361,632 and 20,415,680

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Solution

The fourth proportional to 84,241,088, 126,361,632 and 20,415,680 is: 30,623,520

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,241,088 : 126,361,632 = 20,415,680 : x
  2. Step 2: Convert to fraction form
    84,241,088/126,361,632 = 20,415,680/x
  3. Step 3: Cross multiply
    84,241,088x = 126,361,632 × 20,415,680
  4. Step 4: Simplify right side
    84,241,088x = 2,579,758,643,189,760
  5. Step 5: Solve for x
    x = 2,579,758,643,189,760/84,241,088
  6. Step 6: Final answer
    x = 30,623,520

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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.