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Finding the Fourth Proportional to 85,673.61, 128,519.12 and 29,506.39

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Solution

The fourth proportional to 85,673.61, 128,519.12 and 29,506.39 is: 44,262.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,673.61 : 128,519.12 = 29,506.39 : x
  2. Step 2: Convert to fraction form
    85,673.61/128,519.12 = 29,506.39/x
  3. Step 3: Cross multiply
    85,673.61x = 128,519.12 × 29,506.39
  4. Step 4: Simplify right side
    85,673.61x = 3,792,135,029.64
  5. Step 5: Solve for x
    x = 3,792,135,029.64/85,673.61
  6. Step 6: Final answer
    x = 44,262.58

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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.