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Finding the Fourth Proportional to 57,570.59, 85,951.08 and 43,990.69

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Solution

The fourth proportional to 57,570.59, 85,951.08 and 43,990.69 is: 65,676.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,570.59 : 85,951.08 = 43,990.69 : x
  2. Step 2: Convert to fraction form
    57,570.59/85,951.08 = 43,990.69/x
  3. Step 3: Cross multiply
    57,570.59x = 85,951.08 × 43,990.69
  4. Step 4: Simplify right side
    57,570.59x = 3,781,047,457.78
  5. Step 5: Solve for x
    x = 3,781,047,457.78/57,570.59
  6. Step 6: Final answer
    x = 65,676.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.