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Finding the Fourth Proportional to 56,911.75, 85,367.49 and 19,472.20

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Solution

The fourth proportional to 56,911.75, 85,367.49 and 19,472.20 is: 29,208.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,911.75 : 85,367.49 = 19,472.20 : x
  2. Step 2: Convert to fraction form
    56,911.75/85,367.49 = 19,472.20/x
  3. Step 3: Cross multiply
    56,911.75x = 85,367.49 × 19,472.20
  4. Step 4: Simplify right side
    56,911.75x = 1,662,292,838.78
  5. Step 5: Solve for x
    x = 1,662,292,838.78/56,911.75
  6. Step 6: Final answer
    x = 29,208.25

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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.