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Finding the Fourth Proportional to 57,415.29, 79,235.12 and 31,928.88

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Solution

The fourth proportional to 57,415.29, 79,235.12 and 31,928.88 is: 44,062.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,415.29 : 79,235.12 = 31,928.88 : x
  2. Step 2: Convert to fraction form
    57,415.29/79,235.12 = 31,928.88/x
  3. Step 3: Cross multiply
    57,415.29x = 79,235.12 × 31,928.88
  4. Step 4: Simplify right side
    57,415.29x = 2,529,888,718.09
  5. Step 5: Solve for x
    x = 2,529,888,718.09/57,415.29
  6. Step 6: Final answer
    x = 44,062.98

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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.