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Finding the Fourth Proportional to 71,079,906.60, 106,608,800.70 and 19,956,911.40

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Solution

The fourth proportional to 71,079,906.60, 106,608,800.70 and 19,956,911.40 is: 29,932,262.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,079,906.60 : 106,608,800.70 = 19,956,911.40 : x
  2. Step 2: Convert to fraction form
    71,079,906.60/106,608,800.70 = 19,956,911.40/x
  3. Step 3: Cross multiply
    71,079,906.60x = 106,608,800.70 × 19,956,911.40
  4. Step 4: Simplify right side
    71,079,906.60x = 2,127,582,390,030,158
  5. Step 5: Solve for x
    x = 2,127,582,390,030,158/71,079,906.60
  6. Step 6: Final answer
    x = 29,932,262.04

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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.