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Finding the Fourth Proportional to 71,956.79, 107,925.46 and 19,369.43

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Solution

The fourth proportional to 71,956.79, 107,925.46 and 19,369.43 is: 29,051.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,956.79 : 107,925.46 = 19,369.43 : x
  2. Step 2: Convert to fraction form
    71,956.79/107,925.46 = 19,369.43/x
  3. Step 3: Cross multiply
    71,956.79x = 107,925.46 × 19,369.43
  4. Step 4: Simplify right side
    71,956.79x = 2,090,454,545.84
  5. Step 5: Solve for x
    x = 2,090,454,545.84/71,956.79
  6. Step 6: Final answer
    x = 29,051.53

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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.