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Finding the Fourth Proportional to 85,349.68, 117,803.64 and 51,843.76

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Solution

The fourth proportional to 85,349.68, 117,803.64 and 51,843.76 is: 71,557.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,349.68 : 117,803.64 = 51,843.76 : x
  2. Step 2: Convert to fraction form
    85,349.68/117,803.64 = 51,843.76/x
  3. Step 3: Cross multiply
    85,349.68x = 117,803.64 × 51,843.76
  4. Step 4: Simplify right side
    85,349.68x = 6,107,383,639.29
  5. Step 5: Solve for x
    x = 6,107,383,639.29/85,349.68
  6. Step 6: Final answer
    x = 71,557.19

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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.