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Finding the Fourth Proportional to 70,209.69, 105,356.14 and 25,867.55

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Solution

The fourth proportional to 70,209.69, 105,356.14 and 25,867.55 is: 38,816.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,209.69 : 105,356.14 = 25,867.55 : x
  2. Step 2: Convert to fraction form
    70,209.69/105,356.14 = 25,867.55/x
  3. Step 3: Cross multiply
    70,209.69x = 105,356.14 × 25,867.55
  4. Step 4: Simplify right side
    70,209.69x = 2,725,305,219.26
  5. Step 5: Solve for x
    x = 2,725,305,219.26/70,209.69
  6. Step 6: Final answer
    x = 38,816.65

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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.