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Finding the Fourth Proportional to 57,491.51, 86,237.64 and 20,051.44

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Solution

The fourth proportional to 57,491.51, 86,237.64 and 20,051.44 is: 30,077.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,491.51 : 86,237.64 = 20,051.44 : x
  2. Step 2: Convert to fraction form
    57,491.51/86,237.64 = 20,051.44/x
  3. Step 3: Cross multiply
    57,491.51x = 86,237.64 × 20,051.44
  4. Step 4: Simplify right side
    57,491.51x = 1,729,188,648.61
  5. Step 5: Solve for x
    x = 1,729,188,648.61/57,491.51
  6. Step 6: Final answer
    x = 30,077.29

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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.