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Finding the Fourth Proportional to 57,280.91, 79,045.59 and 31,788.39

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Solution

The fourth proportional to 57,280.91, 79,045.59 and 31,788.39 is: 43,866.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,280.91 : 79,045.59 = 31,788.39 : x
  2. Step 2: Convert to fraction form
    57,280.91/79,045.59 = 31,788.39/x
  3. Step 3: Cross multiply
    57,280.91x = 79,045.59 × 31,788.39
  4. Step 4: Simplify right side
    57,280.91x = 2,512,732,042.70
  5. Step 5: Solve for x
    x = 2,512,732,042.70/57,280.91
  6. Step 6: Final answer
    x = 43,866.83

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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.