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Finding the Fourth Proportional to 57,279.41, 79,043.52 and 31,786.89

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Solution

The fourth proportional to 57,279.41, 79,043.52 and 31,786.89 is: 43,864.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,279.41 : 79,043.52 = 31,786.89 : x
  2. Step 2: Convert to fraction form
    57,279.41/79,043.52 = 31,786.89/x
  3. Step 3: Cross multiply
    57,279.41x = 79,043.52 × 31,786.89
  4. Step 4: Simplify right side
    57,279.41x = 2,512,547,675.45
  5. Step 5: Solve for x
    x = 2,512,547,675.45/57,279.41
  6. Step 6: Final answer
    x = 43,864.77

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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.