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Finding the Fourth Proportional to 85,635.97, 128,466.25 and 26,476.27

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Solution

The fourth proportional to 85,635.97, 128,466.25 and 26,476.27 is: 39,718.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,635.97 : 128,466.25 = 26,476.27 : x
  2. Step 2: Convert to fraction form
    85,635.97/128,466.25 = 26,476.27/x
  3. Step 3: Cross multiply
    85,635.97x = 128,466.25 × 26,476.27
  4. Step 4: Simplify right side
    85,635.97x = 3,401,306,733.53
  5. Step 5: Solve for x
    x = 3,401,306,733.53/85,635.97
  6. Step 6: Final answer
    x = 39,718.20

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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.