Home / 85,916.23-128,721.90-35,886.26

Finding the Fourth Proportional to 85,916.23, 128,721.90 and 35,886.26

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Solution

The fourth proportional to 85,916.23, 128,721.90 and 35,886.26 is: 53,765.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,916.23 : 128,721.90 = 35,886.26 : x
  2. Step 2: Convert to fraction form
    85,916.23/128,721.90 = 35,886.26/x
  3. Step 3: Cross multiply
    85,916.23x = 128,721.90 × 35,886.26
  4. Step 4: Simplify right side
    85,916.23x = 4,619,347,571.09
  5. Step 5: Solve for x
    x = 4,619,347,571.09/85,916.23
  6. Step 6: Final answer
    x = 53,765.72

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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.