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Finding the Fourth Proportional to 72,771,109.70, 109,156,664.55 and 34,507,357.70

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Solution

The fourth proportional to 72,771,109.70, 109,156,664.55 and 34,507,357.70 is: 51,761,036.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,771,109.70 : 109,156,664.55 = 34,507,357.70 : x
  2. Step 2: Convert to fraction form
    72,771,109.70/109,156,664.55 = 34,507,357.70/x
  3. Step 3: Cross multiply
    72,771,109.70x = 109,156,664.55 × 34,507,357.70
  4. Step 4: Simplify right side
    72,771,109.70x = 3,766,708,068,965,760
  5. Step 5: Solve for x
    x = 3,766,708,068,965,760/72,771,109.70
  6. Step 6: Final answer
    x = 51,761,036.55

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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.