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Finding the Fourth Proportional to 84,855.48, 117,098.52 and 47,129.76

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Solution

The fourth proportional to 84,855.48, 117,098.52 and 47,129.76 is: 65,037.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,855.48 : 117,098.52 = 47,129.76 : x
  2. Step 2: Convert to fraction form
    84,855.48/117,098.52 = 47,129.76/x
  3. Step 3: Cross multiply
    84,855.48x = 117,098.52 × 47,129.76
  4. Step 4: Simplify right side
    84,855.48x = 5,518,825,143.96
  5. Step 5: Solve for x
    x = 5,518,825,143.96/84,855.48
  6. Step 6: Final answer
    x = 65,037.93

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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.