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Finding the Fourth Proportional to 85,890.01, 128,871.74 and 44,366.17

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Solution

The fourth proportional to 85,890.01, 128,871.74 and 44,366.17 is: 66,568.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,890.01 : 128,871.74 = 44,366.17 : x
  2. Step 2: Convert to fraction form
    85,890.01/128,871.74 = 44,366.17/x
  3. Step 3: Cross multiply
    85,890.01x = 128,871.74 × 44,366.17
  4. Step 4: Simplify right side
    85,890.01x = 5,717,545,303.20
  5. Step 5: Solve for x
    x = 5,717,545,303.20/85,890.01
  6. Step 6: Final answer
    x = 66,568.22

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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.