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Finding the Fourth Proportional to 70,902.91, 97,841.41 and 39,071.81

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Solution

The fourth proportional to 70,902.91, 97,841.41 and 39,071.81 is: 53,916.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,902.91 : 97,841.41 = 39,071.81 : x
  2. Step 2: Convert to fraction form
    70,902.91/97,841.41 = 39,071.81/x
  3. Step 3: Cross multiply
    70,902.91x = 97,841.41 × 39,071.81
  4. Step 4: Simplify right side
    70,902.91x = 3,822,840,981.65
  5. Step 5: Solve for x
    x = 3,822,840,981.65/70,902.91
  6. Step 6: Final answer
    x = 53,916.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.