Home / 40,079.31-60,127.17-13,780.64

Finding the Fourth Proportional to 40,079.31, 60,127.17 and 13,780.64

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Solution

The fourth proportional to 40,079.31, 60,127.17 and 13,780.64 is: 20,673.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,079.31 : 60,127.17 = 13,780.64 : x
  2. Step 2: Convert to fraction form
    40,079.31/60,127.17 = 13,780.64/x
  3. Step 3: Cross multiply
    40,079.31x = 60,127.17 × 13,780.64
  4. Step 4: Simplify right side
    40,079.31x = 828,590,514.45
  5. Step 5: Solve for x
    x = 828,590,514.45/40,079.31
  6. Step 6: Final answer
    x = 20,673.77

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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.