Home / 77,045.54-115,568.33-20,885.66

Finding the Fourth Proportional to 77,045.54, 115,568.33 and 20,885.66

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Solution

The fourth proportional to 77,045.54, 115,568.33 and 20,885.66 is: 31,328.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,045.54 : 115,568.33 = 20,885.66 : x
  2. Step 2: Convert to fraction form
    77,045.54/115,568.33 = 20,885.66/x
  3. Step 3: Cross multiply
    77,045.54x = 115,568.33 × 20,885.66
  4. Step 4: Simplify right side
    77,045.54x = 2,413,720,164.88
  5. Step 5: Solve for x
    x = 2,413,720,164.88/77,045.54
  6. Step 6: Final answer
    x = 31,328.49

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1.5x scale

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.