Home / 105,691.37-145,863.28-57,954.02

Finding the Fourth Proportional to 105,691.37, 145,863.28 and 57,954.02

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Solution

The fourth proportional to 105,691.37, 145,863.28 and 57,954.02 is: 79,981.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,691.37 : 145,863.28 = 57,954.02 : x
  2. Step 2: Convert to fraction form
    105,691.37/145,863.28 = 57,954.02/x
  3. Step 3: Cross multiply
    105,691.37x = 145,863.28 × 57,954.02
  4. Step 4: Simplify right side
    105,691.37x = 8,453,362,789.51
  5. Step 5: Solve for x
    x = 8,453,362,789.51/105,691.37
  6. Step 6: Final answer
    x = 79,981.58

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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.