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Finding the Fourth Proportional to 57,038.70, 85,563.92 and 21,529.93

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Solution

The fourth proportional to 57,038.70, 85,563.92 and 21,529.93 is: 32,297.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,038.70 : 85,563.92 = 21,529.93 : x
  2. Step 2: Convert to fraction form
    57,038.70/85,563.92 = 21,529.93/x
  3. Step 3: Cross multiply
    57,038.70x = 85,563.92 × 21,529.93
  4. Step 4: Simplify right side
    57,038.70x = 1,842,184,926.93
  5. Step 5: Solve for x
    x = 1,842,184,926.93/57,038.70
  6. Step 6: Final answer
    x = 32,297.11

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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.