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Finding the Fourth Proportional to 70,217.60, 105,277.19 and 25,838.60

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Solution

The fourth proportional to 70,217.60, 105,277.19 and 25,838.60 is: 38,739.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,217.60 : 105,277.19 = 25,838.60 : x
  2. Step 2: Convert to fraction form
    70,217.60/105,277.19 = 25,838.60/x
  3. Step 3: Cross multiply
    70,217.60x = 105,277.19 × 25,838.60
  4. Step 4: Simplify right side
    70,217.60x = 2,720,214,545.96
  5. Step 5: Solve for x
    x = 2,720,214,545.96/70,217.60
  6. Step 6: Final answer
    x = 38,739.78

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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.