Home / 85,896.05-128,894.29-35,971.93

Finding the Fourth Proportional to 85,896.05, 128,894.29 and 35,971.93

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Solution

The fourth proportional to 85,896.05, 128,894.29 and 35,971.93 is: 53,978.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,896.05 : 128,894.29 = 35,971.93 : x
  2. Step 2: Convert to fraction form
    85,896.05/128,894.29 = 35,971.93/x
  3. Step 3: Cross multiply
    85,896.05x = 128,894.29 × 35,971.93
  4. Step 4: Simplify right side
    85,896.05x = 4,636,576,448.47
  5. Step 5: Solve for x
    x = 4,636,576,448.47/85,896.05
  6. Step 6: Final answer
    x = 53,978.93

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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.