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Finding the Fourth Proportional to 81,791,607.30, 122,583,212.55 and 43,471,479.30

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Solution

The fourth proportional to 81,791,607.30, 122,583,212.55 and 43,471,479.30 is: 65,151,838.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,791,607.30 : 122,583,212.55 = 43,471,479.30 : x
  2. Step 2: Convert to fraction form
    81,791,607.30/122,583,212.55 = 43,471,479.30/x
  3. Step 3: Cross multiply
    81,791,607.30x = 122,583,212.55 × 43,471,479.30
  4. Step 4: Simplify right side
    81,791,607.30x = 5,328,873,586,894,825
  5. Step 5: Solve for x
    x = 5,328,873,586,894,825/81,791,607.30
  6. Step 6: Final answer
    x = 65,151,838.47

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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.