Home / 45,421.49-68,141.34-15,831.38

Finding the Fourth Proportional to 45,421.49, 68,141.34 and 15,831.38

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Solution

The fourth proportional to 45,421.49, 68,141.34 and 15,831.38 is: 23,750.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,421.49 : 68,141.34 = 15,831.38 : x
  2. Step 2: Convert to fraction form
    45,421.49/68,141.34 = 15,831.38/x
  3. Step 3: Cross multiply
    45,421.49x = 68,141.34 × 15,831.38
  4. Step 4: Simplify right side
    45,421.49x = 1,078,771,106.54
  5. Step 5: Solve for x
    x = 1,078,771,106.54/45,421.49
  6. Step 6: Final answer
    x = 23,750.24

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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.