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Finding the Fourth Proportional to 57,067.79, 78,751.77 and 31,572.63

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Solution

The fourth proportional to 57,067.79, 78,751.77 and 31,572.63 is: 43,569.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,067.79 : 78,751.77 = 31,572.63 : x
  2. Step 2: Convert to fraction form
    57,067.79/78,751.77 = 31,572.63/x
  3. Step 3: Cross multiply
    57,067.79x = 78,751.77 × 31,572.63
  4. Step 4: Simplify right side
    57,067.79x = 2,486,400,496.06
  5. Step 5: Solve for x
    x = 2,486,400,496.06/57,067.79
  6. Step 6: Final answer
    x = 43,569.25

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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.