Home / 65,138.29-97,714.52-20,754.61

Finding the Fourth Proportional to 65,138.29, 97,714.52 and 20,754.61

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Solution

The fourth proportional to 65,138.29, 97,714.52 and 20,754.61 is: 31,134.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,138.29 : 97,714.52 = 20,754.61 : x
  2. Step 2: Convert to fraction form
    65,138.29/97,714.52 = 20,754.61/x
  3. Step 3: Cross multiply
    65,138.29x = 97,714.52 × 20,754.61
  4. Step 4: Simplify right side
    65,138.29x = 2,028,026,650.16
  5. Step 5: Solve for x
    x = 2,028,026,650.16/65,138.29
  6. Step 6: Final answer
    x = 31,134.17

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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.