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Finding the Fourth Proportional to 70,278.94, 105,459.99 and 25,936.57

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Solution

The fourth proportional to 70,278.94, 105,459.99 and 25,936.57 is: 38,920.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,278.94 : 105,459.99 = 25,936.57 : x
  2. Step 2: Convert to fraction form
    70,278.94/105,459.99 = 25,936.57/x
  3. Step 3: Cross multiply
    70,278.94x = 105,459.99 × 25,936.57
  4. Step 4: Simplify right side
    70,278.94x = 2,735,270,412.83
  5. Step 5: Solve for x
    x = 2,735,270,412.83/70,278.94
  6. Step 6: Final answer
    x = 38,920.20

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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.