Home / 85,719.31-128,584.51-22,540.98

Finding the Fourth Proportional to 85,719.31, 128,584.51 and 22,540.98

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Solution

The fourth proportional to 85,719.31, 128,584.51 and 22,540.98 is: 33,812.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,719.31 : 128,584.51 = 22,540.98 : x
  2. Step 2: Convert to fraction form
    85,719.31/128,584.51 = 22,540.98/x
  3. Step 3: Cross multiply
    85,719.31x = 128,584.51 × 22,540.98
  4. Step 4: Simplify right side
    85,719.31x = 2,898,421,420.85
  5. Step 5: Solve for x
    x = 2,898,421,420.85/85,719.31
  6. Step 6: Final answer
    x = 33,812.93

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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.