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Finding the Fourth Proportional to 70,141.71, 105,226.95 and 25,768.89

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Solution

The fourth proportional to 70,141.71, 105,226.95 and 25,768.89 is: 38,658.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,141.71 : 105,226.95 = 25,768.89 : x
  2. Step 2: Convert to fraction form
    70,141.71/105,226.95 = 25,768.89/x
  3. Step 3: Cross multiply
    70,141.71x = 105,226.95 × 25,768.89
  4. Step 4: Simplify right side
    70,141.71x = 2,711,581,699.59
  5. Step 5: Solve for x
    x = 2,711,581,699.59/70,141.71
  6. Step 6: Final answer
    x = 38,658.62

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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.