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Finding the Fourth Proportional to 83,611.90, 125,417.85 and 50,434.30

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Solution

The fourth proportional to 83,611.90, 125,417.85 and 50,434.30 is: 75,651.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,611.90 : 125,417.85 = 50,434.30 : x
  2. Step 2: Convert to fraction form
    83,611.90/125,417.85 = 50,434.30/x
  3. Step 3: Cross multiply
    83,611.90x = 125,417.85 × 50,434.30
  4. Step 4: Simplify right side
    83,611.90x = 6,325,361,472.26
  5. Step 5: Solve for x
    x = 6,325,361,472.26/83,611.90
  6. Step 6: Final answer
    x = 75,651.45

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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.