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Finding the Fourth Proportional to 57,173.73, 85,432.97 and 43,590.18

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Solution

The fourth proportional to 57,173.73, 85,432.97 and 43,590.18 is: 65,135.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,173.73 : 85,432.97 = 43,590.18 : x
  2. Step 2: Convert to fraction form
    57,173.73/85,432.97 = 43,590.18/x
  3. Step 3: Cross multiply
    57,173.73x = 85,432.97 × 43,590.18
  4. Step 4: Simplify right side
    57,173.73x = 3,724,038,969.58
  5. Step 5: Solve for x
    x = 3,724,038,969.58/57,173.73
  6. Step 6: Final answer
    x = 65,135.50

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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.