Home / 81,715.77-112,772.58-61,537.05

Finding the Fourth Proportional to 81,715.77, 112,772.58 and 61,537.05

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Solution

The fourth proportional to 81,715.77, 112,772.58 and 61,537.05 is: 84,924.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,715.77 : 112,772.58 = 61,537.05 : x
  2. Step 2: Convert to fraction form
    81,715.77/112,772.58 = 61,537.05/x
  3. Step 3: Cross multiply
    81,715.77x = 112,772.58 × 61,537.05
  4. Step 4: Simplify right side
    81,715.77x = 6,939,691,022.54
  5. Step 5: Solve for x
    x = 6,939,691,022.54/81,715.77
  6. Step 6: Final answer
    x = 84,924.75

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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.