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Finding the Fourth Proportional to 39,763, 54,871.76 and 22,766.68

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Solution

The fourth proportional to 39,763, 54,871.76 and 22,766.68 is: 31,417.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,763 : 54,871.76 = 22,766.68 : x
  2. Step 2: Convert to fraction form
    39,763/54,871.76 = 22,766.68/x
  3. Step 3: Cross multiply
    39,763x = 54,871.76 × 22,766.68
  4. Step 4: Simplify right side
    39,763x = 1,249,247,800.96
  5. Step 5: Solve for x
    x = 1,249,247,800.96/39,763
  6. Step 6: Final answer
    x = 31,417.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.