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Finding the Fourth Proportional to 70,313.27, 105,478.61 and 25,940.25

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Solution

The fourth proportional to 70,313.27, 105,478.61 and 25,940.25 is: 38,913.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,313.27 : 105,478.61 = 25,940.25 : x
  2. Step 2: Convert to fraction form
    70,313.27/105,478.61 = 25,940.25/x
  3. Step 3: Cross multiply
    70,313.27x = 105,478.61 × 25,940.25
  4. Step 4: Simplify right side
    70,313.27x = 2,736,141,383.35
  5. Step 5: Solve for x
    x = 2,736,141,383.35/70,313.27
  6. Step 6: Final answer
    x = 38,913.59

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1.5x scale

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.