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Finding the Fourth Proportional to 57,338.40, 79,130.88 and 43,168.80

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Solution

The fourth proportional to 57,338.40, 79,130.88 and 43,168.80 is: 59,575.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,338.40 : 79,130.88 = 43,168.80 : x
  2. Step 2: Convert to fraction form
    57,338.40/79,130.88 = 43,168.80/x
  3. Step 3: Cross multiply
    57,338.40x = 79,130.88 × 43,168.80
  4. Step 4: Simplify right side
    57,338.40x = 3,415,985,132.54
  5. Step 5: Solve for x
    x = 3,415,985,132.54/57,338.40
  6. Step 6: Final answer
    x = 59,575.87

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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.