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Finding the Fourth Proportional to 70,321.41, 105,453.72 and 25,938.30

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Solution

The fourth proportional to 70,321.41, 105,453.72 and 25,938.30 is: 38,896.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,321.41 : 105,453.72 = 25,938.30 : x
  2. Step 2: Convert to fraction form
    70,321.41/105,453.72 = 25,938.30/x
  3. Step 3: Cross multiply
    70,321.41x = 105,453.72 × 25,938.30
  4. Step 4: Simplify right side
    70,321.41x = 2,735,290,225.48
  5. Step 5: Solve for x
    x = 2,735,290,225.48/70,321.41
  6. Step 6: Final answer
    x = 38,896.98

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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.