Home / 81,579.52-112,369.98-57,665.08

Finding the Fourth Proportional to 81,579.52, 112,369.98 and 57,665.08

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Solution

The fourth proportional to 81,579.52, 112,369.98 and 57,665.08 is: 79,429.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,579.52 : 112,369.98 = 57,665.08 : x
  2. Step 2: Convert to fraction form
    81,579.52/112,369.98 = 57,665.08/x
  3. Step 3: Cross multiply
    81,579.52x = 112,369.98 × 57,665.08
  4. Step 4: Simplify right side
    81,579.52x = 6,479,823,886.30
  5. Step 5: Solve for x
    x = 6,479,823,886.30/81,579.52
  6. Step 6: Final answer
    x = 79,429.54

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1.5x scale

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.