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Finding the Fourth Proportional to 85,356.95, 128,035.44 and 29,197.59

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Solution

The fourth proportional to 85,356.95, 128,035.44 and 29,197.59 is: 43,796.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,356.95 : 128,035.44 = 29,197.59 : x
  2. Step 2: Convert to fraction form
    85,356.95/128,035.44 = 29,197.59/x
  3. Step 3: Cross multiply
    85,356.95x = 128,035.44 × 29,197.59
  4. Step 4: Simplify right side
    85,356.95x = 3,738,326,282.59
  5. Step 5: Solve for x
    x = 3,738,326,282.59/85,356.95
  6. Step 6: Final answer
    x = 43,796.39

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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.