Home / 50,711.60-76,051.20-21,122.30

Finding the Fourth Proportional to 50,711.60, 76,051.20 and 21,122.30

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Solution

The fourth proportional to 50,711.60, 76,051.20 and 21,122.30 is: 31,676.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,711.60 : 76,051.20 = 21,122.30 : x
  2. Step 2: Convert to fraction form
    50,711.60/76,051.20 = 21,122.30/x
  3. Step 3: Cross multiply
    50,711.60x = 76,051.20 × 21,122.30
  4. Step 4: Simplify right side
    50,711.60x = 1,606,376,261.76
  5. Step 5: Solve for x
    x = 1,606,376,261.76/50,711.60
  6. Step 6: Final answer
    x = 31,676.70

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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.