Home / 89,689.58-123,717.64-57,431.18

Finding the Fourth Proportional to 89,689.58, 123,717.64 and 57,431.18

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Solution

The fourth proportional to 89,689.58, 123,717.64 and 57,431.18 is: 79,220.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,689.58 : 123,717.64 = 57,431.18 : x
  2. Step 2: Convert to fraction form
    89,689.58/123,717.64 = 57,431.18/x
  3. Step 3: Cross multiply
    89,689.58x = 123,717.64 × 57,431.18
  4. Step 4: Simplify right side
    89,689.58x = 7,105,249,289.85
  5. Step 5: Solve for x
    x = 7,105,249,289.85/89,689.58
  6. Step 6: Final answer
    x = 79,220.46

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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.