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Finding the Fourth Proportional to 85,838.48, 128,814.84 and 35,278.97

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Solution

The fourth proportional to 85,838.48, 128,814.84 and 35,278.97 is: 52,941.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,838.48 : 128,814.84 = 35,278.97 : x
  2. Step 2: Convert to fraction form
    85,838.48/128,814.84 = 35,278.97/x
  3. Step 3: Cross multiply
    85,838.48x = 128,814.84 × 35,278.97
  4. Step 4: Simplify right side
    85,838.48x = 4,544,454,231.84
  5. Step 5: Solve for x
    x = 4,544,454,231.84/85,838.48
  6. Step 6: Final answer
    x = 52,941.93

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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.