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Finding the Fourth Proportional to 84,602,884.75, 126,904,765.04 and 38,512,520.94

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Solution

The fourth proportional to 84,602,884.75, 126,904,765.04 and 38,512,520.94 is: 57,768,980.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,602,884.75 : 126,904,765.04 = 38,512,520.94 : x
  2. Step 2: Convert to fraction form
    84,602,884.75/126,904,765.04 = 38,512,520.94/x
  3. Step 3: Cross multiply
    84,602,884.75x = 126,904,765.04 × 38,512,520.94
  4. Step 4: Simplify right side
    84,602,884.75x = 4,887,422,420,988,780
  5. Step 5: Solve for x
    x = 4,887,422,420,988,780/84,602,884.75
  6. Step 6: Final answer
    x = 57,768,980.76

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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.