Home / 56,989.56-78,640.29-33,115.89

Finding the Fourth Proportional to 56,989.56, 78,640.29 and 33,115.89

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Solution

The fourth proportional to 56,989.56, 78,640.29 and 33,115.89 is: 45,696.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,989.56 : 78,640.29 = 33,115.89 : x
  2. Step 2: Convert to fraction form
    56,989.56/78,640.29 = 33,115.89/x
  3. Step 3: Cross multiply
    56,989.56x = 78,640.29 × 33,115.89
  4. Step 4: Simplify right side
    56,989.56x = 2,604,243,193.21
  5. Step 5: Solve for x
    x = 2,604,243,193.21/56,989.56
  6. Step 6: Final answer
    x = 45,696.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.