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Finding the Fourth Proportional to 57,803.40, 86,703.89 and 26,638.65

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Solution

The fourth proportional to 57,803.40, 86,703.89 and 26,638.65 is: 39,957.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,803.40 : 86,703.89 = 26,638.65 : x
  2. Step 2: Convert to fraction form
    57,803.40/86,703.89 = 26,638.65/x
  3. Step 3: Cross multiply
    57,803.40x = 86,703.89 × 26,638.65
  4. Step 4: Simplify right side
    57,803.40x = 2,309,674,446.16
  5. Step 5: Solve for x
    x = 2,309,674,446.16/57,803.40
  6. Step 6: Final answer
    x = 39,957.42

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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.