Home / 81,446.58-112,395.20-45,637.29

Finding the Fourth Proportional to 81,446.58, 112,395.20 and 45,637.29

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Solution

The fourth proportional to 81,446.58, 112,395.20 and 45,637.29 is: 62,978.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,446.58 : 112,395.20 = 45,637.29 : x
  2. Step 2: Convert to fraction form
    81,446.58/112,395.20 = 45,637.29/x
  3. Step 3: Cross multiply
    81,446.58x = 112,395.20 × 45,637.29
  4. Step 4: Simplify right side
    81,446.58x = 5,129,412,108.82
  5. Step 5: Solve for x
    x = 5,129,412,108.82/81,446.58
  6. Step 6: Final answer
    x = 62,978.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.