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Finding the Fourth Proportional to 85,498.88, 128,254.77 and 25,522.62

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Solution

The fourth proportional to 85,498.88, 128,254.77 and 25,522.62 is: 38,285.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,498.88 : 128,254.77 = 25,522.62 : x
  2. Step 2: Convert to fraction form
    85,498.88/128,254.77 = 25,522.62/x
  3. Step 3: Cross multiply
    85,498.88x = 128,254.77 × 25,522.62
  4. Step 4: Simplify right side
    85,498.88x = 3,273,397,630.28
  5. Step 5: Solve for x
    x = 3,273,397,630.28/85,498.88
  6. Step 6: Final answer
    x = 38,285.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.