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Finding the Fourth Proportional to 57,541.79, 86,312.90 and 20,101.73

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Solution

The fourth proportional to 57,541.79, 86,312.90 and 20,101.73 is: 30,152.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,541.79 : 86,312.90 = 20,101.73 : x
  2. Step 2: Convert to fraction form
    57,541.79/86,312.90 = 20,101.73/x
  3. Step 3: Cross multiply
    57,541.79x = 86,312.90 × 20,101.73
  4. Step 4: Simplify right side
    57,541.79x = 1,735,038,230.01
  5. Step 5: Solve for x
    x = 1,735,038,230.01/57,541.79
  6. Step 6: Final answer
    x = 30,152.66

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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.