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Finding the Fourth Proportional to 57,455.56, 79,290.57 and 34,798.78

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Solution

The fourth proportional to 57,455.56, 79,290.57 and 34,798.78 is: 48,023.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,455.56 : 79,290.57 = 34,798.78 : x
  2. Step 2: Convert to fraction form
    57,455.56/79,290.57 = 34,798.78/x
  3. Step 3: Cross multiply
    57,455.56x = 79,290.57 × 34,798.78
  4. Step 4: Simplify right side
    57,455.56x = 2,759,215,101.50
  5. Step 5: Solve for x
    x = 2,759,215,101.50/57,455.56
  6. Step 6: Final answer
    x = 48,023.47

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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.