Home / 40,081.07-60,129.80-13,782.39

Finding the Fourth Proportional to 40,081.07, 60,129.80 and 13,782.39

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Solution

The fourth proportional to 40,081.07, 60,129.80 and 13,782.39 is: 20,676.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,081.07 : 60,129.80 = 13,782.39 : x
  2. Step 2: Convert to fraction form
    40,081.07/60,129.80 = 13,782.39/x
  3. Step 3: Cross multiply
    40,081.07x = 60,129.80 × 13,782.39
  4. Step 4: Simplify right side
    40,081.07x = 828,732,285.31
  5. Step 5: Solve for x
    x = 828,732,285.31/40,081.07
  6. Step 6: Final answer
    x = 20,676.40

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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.