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Finding the Fourth Proportional to 82,124.60, 123,208.79 and 25,965.76

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Solution

The fourth proportional to 82,124.60, 123,208.79 and 25,965.76 is: 38,955.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,124.60 : 123,208.79 = 25,965.76 : x
  2. Step 2: Convert to fraction form
    82,124.60/123,208.79 = 25,965.76/x
  3. Step 3: Cross multiply
    82,124.60x = 123,208.79 × 25,965.76
  4. Step 4: Simplify right side
    82,124.60x = 3,199,209,433.18
  5. Step 5: Solve for x
    x = 3,199,209,433.18/82,124.60
  6. Step 6: Final answer
    x = 38,955.56

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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.