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Finding the Fourth Proportional to 50,953.70, 76,438.90 and 20,959.80

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Solution

The fourth proportional to 50,953.70, 76,438.90 and 20,959.80 is: 31,443.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,953.70 : 76,438.90 = 20,959.80 : x
  2. Step 2: Convert to fraction form
    50,953.70/76,438.90 = 20,959.80/x
  3. Step 3: Cross multiply
    50,953.70x = 76,438.90 × 20,959.80
  4. Step 4: Simplify right side
    50,953.70x = 1,602,144,056.22
  5. Step 5: Solve for x
    x = 1,602,144,056.22/50,953.70
  6. Step 6: Final answer
    x = 31,443.13

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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.