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Finding the Fourth Proportional to 81,579.58, 112,694.52 and 62,956.06

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Solution

The fourth proportional to 81,579.58, 112,694.52 and 62,956.06 is: 86,967.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,579.58 : 112,694.52 = 62,956.06 : x
  2. Step 2: Convert to fraction form
    81,579.58/112,694.52 = 62,956.06/x
  3. Step 3: Cross multiply
    81,579.58x = 112,694.52 × 62,956.06
  4. Step 4: Simplify right side
    81,579.58x = 7,094,802,962.79
  5. Step 5: Solve for x
    x = 7,094,802,962.79/81,579.58
  6. Step 6: Final answer
    x = 86,967.88

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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.