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Finding the Fourth Proportional to 85,675.73, 128,519.06 and 26,506.44

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Solution

The fourth proportional to 85,675.73, 128,519.06 and 26,506.44 is: 39,761.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,675.73 : 128,519.06 = 26,506.44 : x
  2. Step 2: Convert to fraction form
    85,675.73/128,519.06 = 26,506.44/x
  3. Step 3: Cross multiply
    85,675.73x = 128,519.06 × 26,506.44
  4. Step 4: Simplify right side
    85,675.73x = 3,406,582,620.21
  5. Step 5: Solve for x
    x = 3,406,582,620.21/85,675.73
  6. Step 6: Final answer
    x = 39,761.35

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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.