Home / 85,443.05-128,091.87-52,186.44

Finding the Fourth Proportional to 85,443.05, 128,091.87 and 52,186.44

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Solution

The fourth proportional to 85,443.05, 128,091.87 and 52,186.44 is: 78,235.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,443.05 : 128,091.87 = 52,186.44 : x
  2. Step 2: Convert to fraction form
    85,443.05/128,091.87 = 52,186.44/x
  3. Step 3: Cross multiply
    85,443.05x = 128,091.87 × 52,186.44
  4. Step 4: Simplify right side
    85,443.05x = 6,684,658,688.24
  5. Step 5: Solve for x
    x = 6,684,658,688.24/85,443.05
  6. Step 6: Final answer
    x = 78,235.26

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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.