Home / 89,676.16-123,756.28-55,703.25

Finding the Fourth Proportional to 89,676.16, 123,756.28 and 55,703.25

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Solution

The fourth proportional to 89,676.16, 123,756.28 and 55,703.25 is: 76,872.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,676.16 : 123,756.28 = 55,703.25 : x
  2. Step 2: Convert to fraction form
    89,676.16/123,756.28 = 55,703.25/x
  3. Step 3: Cross multiply
    89,676.16x = 123,756.28 × 55,703.25
  4. Step 4: Simplify right side
    89,676.16x = 6,893,627,259.11
  5. Step 5: Solve for x
    x = 6,893,627,259.11/89,676.16
  6. Step 6: Final answer
    x = 76,872.46

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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.