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Finding the Fourth Proportional to 57,894.69, 79,894.67 and 31,398.69

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Solution

The fourth proportional to 57,894.69, 79,894.67 and 31,398.69 is: 43,330.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,894.69 : 79,894.67 = 31,398.69 : x
  2. Step 2: Convert to fraction form
    57,894.69/79,894.67 = 31,398.69/x
  3. Step 3: Cross multiply
    57,894.69x = 79,894.67 × 31,398.69
  4. Step 4: Simplify right side
    57,894.69x = 2,508,587,975.98
  5. Step 5: Solve for x
    x = 2,508,587,975.98/57,894.69
  6. Step 6: Final answer
    x = 43,330.19

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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.