Home / 81,189.41-112,089.83-51,000.57

Finding the Fourth Proportional to 81,189.41, 112,089.83 and 51,000.57

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Solution

The fourth proportional to 81,189.41, 112,089.83 and 51,000.57 is: 70,411.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,189.41 : 112,089.83 = 51,000.57 : x
  2. Step 2: Convert to fraction form
    81,189.41/112,089.83 = 51,000.57/x
  3. Step 3: Cross multiply
    81,189.41x = 112,089.83 × 51,000.57
  4. Step 4: Simplify right side
    81,189.41x = 5,716,644,966.20
  5. Step 5: Solve for x
    x = 5,716,644,966.20/81,189.41
  6. Step 6: Final answer
    x = 70,411.22

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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.