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Finding the Fourth Proportional to 70,171.40, 105,298.60 and 25,829.30

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Solution

The fourth proportional to 70,171.40, 105,298.60 and 25,829.30 is: 38,759.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,171.40 : 105,298.60 = 25,829.30 : x
  2. Step 2: Convert to fraction form
    70,171.40/105,298.60 = 25,829.30/x
  3. Step 3: Cross multiply
    70,171.40x = 105,298.60 × 25,829.30
  4. Step 4: Simplify right side
    70,171.40x = 2,719,789,128.98
  5. Step 5: Solve for x
    x = 2,719,789,128.98/70,171.40
  6. Step 6: Final answer
    x = 38,759.23

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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.