Home / 89,315.78-123,265.59-51,078.89

Finding the Fourth Proportional to 89,315.78, 123,265.59 and 51,078.89

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Solution

The fourth proportional to 89,315.78, 123,265.59 and 51,078.89 is: 70,494.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,315.78 : 123,265.59 = 51,078.89 : x
  2. Step 2: Convert to fraction form
    89,315.78/123,265.59 = 51,078.89/x
  3. Step 3: Cross multiply
    89,315.78x = 123,265.59 × 51,078.89
  4. Step 4: Simplify right side
    89,315.78x = 6,296,269,512.40
  5. Step 5: Solve for x
    x = 6,296,269,512.40/89,315.78
  6. Step 6: Final answer
    x = 70,494.48

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1.5x scale

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.