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Finding the Fourth Proportional to 85,890.51, 128,872.49 and 44,366.67

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Solution

The fourth proportional to 85,890.51, 128,872.49 and 44,366.67 is: 66,568.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,890.51 : 128,872.49 = 44,366.67 : x
  2. Step 2: Convert to fraction form
    85,890.51/128,872.49 = 44,366.67/x
  3. Step 3: Cross multiply
    85,890.51x = 128,872.49 × 44,366.67
  4. Step 4: Simplify right side
    85,890.51x = 5,717,643,014.07
  5. Step 5: Solve for x
    x = 5,717,643,014.07/85,890.51
  6. Step 6: Final answer
    x = 66,568.97

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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.