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Finding the Fourth Proportional to 85,939.95, 128,825.15 and 36,034.23

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Solution

The fourth proportional to 85,939.95, 128,825.15 and 36,034.23 is: 54,015.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,939.95 : 128,825.15 = 36,034.23 : x
  2. Step 2: Convert to fraction form
    85,939.95/128,825.15 = 36,034.23/x
  3. Step 3: Cross multiply
    85,939.95x = 128,825.15 × 36,034.23
  4. Step 4: Simplify right side
    85,939.95x = 4,642,115,084.88
  5. Step 5: Solve for x
    x = 4,642,115,084.88/85,939.95
  6. Step 6: Final answer
    x = 54,015.80

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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.