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Finding the Fourth Proportional to 83,744.88, 125,621.64 and 21,415.92

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Solution

The fourth proportional to 83,744.88, 125,621.64 and 21,415.92 is: 32,124.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,744.88 : 125,621.64 = 21,415.92 : x
  2. Step 2: Convert to fraction form
    83,744.88/125,621.64 = 21,415.92/x
  3. Step 3: Cross multiply
    83,744.88x = 125,621.64 × 21,415.92
  4. Step 4: Simplify right side
    83,744.88x = 2,690,302,992.51
  5. Step 5: Solve for x
    x = 2,690,302,992.51/83,744.88
  6. Step 6: Final answer
    x = 32,124.98

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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.