Home / 42,761.12-64,138.64-13,175.88

Finding the Fourth Proportional to 42,761.12, 64,138.64 and 13,175.88

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Solution

The fourth proportional to 42,761.12, 64,138.64 and 13,175.88 is: 19,762.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,761.12 : 64,138.64 = 13,175.88 : x
  2. Step 2: Convert to fraction form
    42,761.12/64,138.64 = 13,175.88/x
  3. Step 3: Cross multiply
    42,761.12x = 64,138.64 × 13,175.88
  4. Step 4: Simplify right side
    42,761.12x = 845,083,024.00
  5. Step 5: Solve for x
    x = 845,083,024.00/42,761.12
  6. Step 6: Final answer
    x = 19,762.88

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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.