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Finding the Fourth Proportional to 64,591,702.92, 96,897,231.36 and 20,857,848.12

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Solution

The fourth proportional to 64,591,702.92, 96,897,231.36 and 20,857,848.12 is: 31,289,897.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,591,702.92 : 96,897,231.36 = 20,857,848.12 : x
  2. Step 2: Convert to fraction form
    64,591,702.92/96,897,231.36 = 20,857,848.12/x
  3. Step 3: Cross multiply
    64,591,702.92x = 96,897,231.36 × 20,857,848.12
  4. Step 4: Simplify right side
    64,591,702.92x = 2,021,067,734,955,381.25
  5. Step 5: Solve for x
    x = 2,021,067,734,955,381.25/64,591,702.92
  6. Step 6: Final answer
    x = 31,289,897.05

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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.