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Finding the Fourth Proportional to 57,342.81, 85,980.15 and 21,806.73

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Solution

The fourth proportional to 57,342.81, 85,980.15 and 21,806.73 is: 32,697.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,342.81 : 85,980.15 = 21,806.73 : x
  2. Step 2: Convert to fraction form
    57,342.81/85,980.15 = 21,806.73/x
  3. Step 3: Cross multiply
    57,342.81x = 85,980.15 × 21,806.73
  4. Step 4: Simplify right side
    57,342.81x = 1,874,945,916.41
  5. Step 5: Solve for x
    x = 1,874,945,916.41/57,342.81
  6. Step 6: Final answer
    x = 32,697.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.