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Finding the Fourth Proportional to 70,265.70, 105,362.10 and 25,869.60

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Solution

The fourth proportional to 70,265.70, 105,362.10 and 25,869.60 is: 38,790.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,265.70 : 105,362.10 = 25,869.60 : x
  2. Step 2: Convert to fraction form
    70,265.70/105,362.10 = 25,869.60/x
  3. Step 3: Cross multiply
    70,265.70x = 105,362.10 × 25,869.60
  4. Step 4: Simplify right side
    70,265.70x = 2,725,675,382.16
  5. Step 5: Solve for x
    x = 2,725,675,382.16/70,265.70
  6. Step 6: Final answer
    x = 38,790.98

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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.