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Finding the Fourth Proportional to 66,187, 98,803.97 and 56,725

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Solution

The fourth proportional to 66,187, 98,803.97 and 56,725 is: 84,679.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,187 : 98,803.97 = 56,725 : x
  2. Step 2: Convert to fraction form
    66,187/98,803.97 = 56,725/x
  3. Step 3: Cross multiply
    66,187x = 98,803.97 × 56,725
  4. Step 4: Simplify right side
    66,187x = 5,604,655,198.25
  5. Step 5: Solve for x
    x = 5,604,655,198.25/66,187
  6. Step 6: Final answer
    x = 84,679.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.