Home / 55,386.86-76,423.62-31,512.10

Finding the Fourth Proportional to 55,386.86, 76,423.62 and 31,512.10

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Solution

The fourth proportional to 55,386.86, 76,423.62 and 31,512.10 is: 43,480.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,386.86 : 76,423.62 = 31,512.10 : x
  2. Step 2: Convert to fraction form
    55,386.86/76,423.62 = 31,512.10/x
  3. Step 3: Cross multiply
    55,386.86x = 76,423.62 × 31,512.10
  4. Step 4: Simplify right side
    55,386.86x = 2,408,268,755.80
  5. Step 5: Solve for x
    x = 2,408,268,755.80/55,386.86
  6. Step 6: Final answer
    x = 43,480.87

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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.