Home / 85,401.26-128,088.72-29,228.47

Finding the Fourth Proportional to 85,401.26, 128,088.72 and 29,228.47

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Solution

The fourth proportional to 85,401.26, 128,088.72 and 29,228.47 is: 43,838.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,401.26 : 128,088.72 = 29,228.47 : x
  2. Step 2: Convert to fraction form
    85,401.26/128,088.72 = 29,228.47/x
  3. Step 3: Cross multiply
    85,401.26x = 128,088.72 × 29,228.47
  4. Step 4: Simplify right side
    85,401.26x = 3,743,836,989.64
  5. Step 5: Solve for x
    x = 3,743,836,989.64/85,401.26
  6. Step 6: Final answer
    x = 43,838.19

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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.