Home / 42,749.44-64,127.38-12,761.31

Finding the Fourth Proportional to 42,749.44, 64,127.38 and 12,761.31

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Solution

The fourth proportional to 42,749.44, 64,127.38 and 12,761.31 is: 19,142.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,749.44 : 64,127.38 = 12,761.31 : x
  2. Step 2: Convert to fraction form
    42,749.44/64,127.38 = 12,761.31/x
  3. Step 3: Cross multiply
    42,749.44x = 64,127.38 × 12,761.31
  4. Step 4: Simplify right side
    42,749.44x = 818,349,407.57
  5. Step 5: Solve for x
    x = 818,349,407.57/42,749.44
  6. Step 6: Final answer
    x = 19,142.93

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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.