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Finding the Fourth Proportional to 57,420.42, 85,801.22 and 43,836.42

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Solution

The fourth proportional to 57,420.42, 85,801.22 and 43,836.42 is: 65,503.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,420.42 : 85,801.22 = 43,836.42 : x
  2. Step 2: Convert to fraction form
    57,420.42/85,801.22 = 43,836.42/x
  3. Step 3: Cross multiply
    57,420.42x = 85,801.22 × 43,836.42
  4. Step 4: Simplify right side
    57,420.42x = 3,761,218,316.43
  5. Step 5: Solve for x
    x = 3,761,218,316.43/57,420.42
  6. Step 6: Final answer
    x = 65,503.15

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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.