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Finding the Fourth Proportional to 85,375.77, 117,826.60 and 63,828.20

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Solution

The fourth proportional to 85,375.77, 117,826.60 and 63,828.20 is: 88,088.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,375.77 : 117,826.60 = 63,828.20 : x
  2. Step 2: Convert to fraction form
    85,375.77/117,826.60 = 63,828.20/x
  3. Step 3: Cross multiply
    85,375.77x = 117,826.60 × 63,828.20
  4. Step 4: Simplify right side
    85,375.77x = 7,520,660,044.79
  5. Step 5: Solve for x
    x = 7,520,660,044.79/85,375.77
  6. Step 6: Final answer
    x = 88,088.93

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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.