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Finding the Fourth Proportional to 57,305.55, 79,077.70 and 31,809.91

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Solution

The fourth proportional to 57,305.55, 79,077.70 and 31,809.91 is: 43,895.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,305.55 : 79,077.70 = 31,809.91 : x
  2. Step 2: Convert to fraction form
    57,305.55/79,077.70 = 31,809.91/x
  3. Step 3: Cross multiply
    57,305.55x = 79,077.70 × 31,809.91
  4. Step 4: Simplify right side
    57,305.55x = 2,515,454,360.96
  5. Step 5: Solve for x
    x = 2,515,454,360.96/57,305.55
  6. Step 6: Final answer
    x = 43,895.48

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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.