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Finding the Fourth Proportional to 70,375.86, 105,487.02 and 25,965.18

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Solution

The fourth proportional to 70,375.86, 105,487.02 and 25,965.18 is: 38,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,375.86 : 105,487.02 = 25,965.18 : x
  2. Step 2: Convert to fraction form
    70,375.86/105,487.02 = 25,965.18/x
  3. Step 3: Cross multiply
    70,375.86x = 105,487.02 × 25,965.18
  4. Step 4: Simplify right side
    70,375.86x = 2,738,989,461.96
  5. Step 5: Solve for x
    x = 2,738,989,461.96/70,375.86
  6. Step 6: Final answer
    x = 38,919.45

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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.