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Finding the Fourth Proportional to 84,855.74, 117,004.30 and 54,187.52

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Solution

The fourth proportional to 84,855.74, 117,004.30 and 54,187.52 is: 74,717.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,855.74 : 117,004.30 = 54,187.52 : x
  2. Step 2: Convert to fraction form
    84,855.74/117,004.30 = 54,187.52/x
  3. Step 3: Cross multiply
    84,855.74x = 117,004.30 × 54,187.52
  4. Step 4: Simplify right side
    84,855.74x = 6,340,172,125.85
  5. Step 5: Solve for x
    x = 6,340,172,125.85/84,855.74
  6. Step 6: Final answer
    x = 74,717.07

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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.