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Finding the Fourth Proportional to 82,960.40, 124,441.05 and 20,630.90

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Solution

The fourth proportional to 82,960.40, 124,441.05 and 20,630.90 is: 30,946.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,960.40 : 124,441.05 = 20,630.90 : x
  2. Step 2: Convert to fraction form
    82,960.40/124,441.05 = 20,630.90/x
  3. Step 3: Cross multiply
    82,960.40x = 124,441.05 × 20,630.90
  4. Step 4: Simplify right side
    82,960.40x = 2,567,330,858.45
  5. Step 5: Solve for x
    x = 2,567,330,858.45/82,960.40
  6. Step 6: Final answer
    x = 30,946.46

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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.