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Finding the Fourth Proportional to 57,437.56, 79,265.69 and 34,780.78

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Solution

The fourth proportional to 57,437.56, 79,265.69 and 34,780.78 is: 47,998.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,437.56 : 79,265.69 = 34,780.78 : x
  2. Step 2: Convert to fraction form
    57,437.56/79,265.69 = 34,780.78/x
  3. Step 3: Cross multiply
    57,437.56x = 79,265.69 × 34,780.78
  4. Step 4: Simplify right side
    57,437.56x = 2,756,922,525.44
  5. Step 5: Solve for x
    x = 2,756,922,525.44/57,437.56
  6. Step 6: Final answer
    x = 47,998.60

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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.