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Finding the Fourth Proportional to 39,714.80, 54,807.70 and 22,947.80

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Solution

The fourth proportional to 39,714.80, 54,807.70 and 22,947.80 is: 31,668.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,714.80 : 54,807.70 = 22,947.80 : x
  2. Step 2: Convert to fraction form
    39,714.80/54,807.70 = 22,947.80/x
  3. Step 3: Cross multiply
    39,714.80x = 54,807.70 × 22,947.80
  4. Step 4: Simplify right side
    39,714.80x = 1,257,716,138.06
  5. Step 5: Solve for x
    x = 1,257,716,138.06/39,714.80
  6. Step 6: Final answer
    x = 31,668.70

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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.