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Finding the Fourth Proportional to 70,316.28, 105,471.06 and 25,939.80

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Solution

The fourth proportional to 70,316.28, 105,471.06 and 25,939.80 is: 38,908.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,316.28 : 105,471.06 = 25,939.80 : x
  2. Step 2: Convert to fraction form
    70,316.28/105,471.06 = 25,939.80/x
  3. Step 3: Cross multiply
    70,316.28x = 105,471.06 × 25,939.80
  4. Step 4: Simplify right side
    70,316.28x = 2,735,898,202.19
  5. Step 5: Solve for x
    x = 2,735,898,202.19/70,316.28
  6. Step 6: Final answer
    x = 38,908.46

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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.