Home / 75,031.58-103,494.78-48,131.48

Finding the Fourth Proportional to 75,031.58, 103,494.78 and 48,131.48

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Solution

The fourth proportional to 75,031.58, 103,494.78 and 48,131.48 is: 66,390.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,031.58 : 103,494.78 = 48,131.48 : x
  2. Step 2: Convert to fraction form
    75,031.58/103,494.78 = 48,131.48/x
  3. Step 3: Cross multiply
    75,031.58x = 103,494.78 × 48,131.48
  4. Step 4: Simplify right side
    75,031.58x = 4,981,357,192.41
  5. Step 5: Solve for x
    x = 4,981,357,192.41/75,031.58
  6. Step 6: Final answer
    x = 66,390.14

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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.