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Finding the Fourth Proportional to 70,156.05, 105,234.09 and 25,763.60

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Solution

The fourth proportional to 70,156.05, 105,234.09 and 25,763.60 is: 38,645.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,156.05 : 105,234.09 = 25,763.60 : x
  2. Step 2: Convert to fraction form
    70,156.05/105,234.09 = 25,763.60/x
  3. Step 3: Cross multiply
    70,156.05x = 105,234.09 × 25,763.60
  4. Step 4: Simplify right side
    70,156.05x = 2,711,208,474.95
  5. Step 5: Solve for x
    x = 2,711,208,474.95/70,156.05
  6. Step 6: Final answer
    x = 38,645.40

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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.