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Finding the Fourth Proportional to 70,940.61, 97,898.70 and 39,110.66

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Solution

The fourth proportional to 70,940.61, 97,898.70 and 39,110.66 is: 53,973.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,940.61 : 97,898.70 = 39,110.66 : x
  2. Step 2: Convert to fraction form
    70,940.61/97,898.70 = 39,110.66/x
  3. Step 3: Cross multiply
    70,940.61x = 97,898.70 × 39,110.66
  4. Step 4: Simplify right side
    70,940.61x = 3,828,882,280.65
  5. Step 5: Solve for x
    x = 3,828,882,280.65/70,940.61
  6. Step 6: Final answer
    x = 53,973.07

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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.