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Finding the Fourth Proportional to 92,006.69, 138,009.86 and 28,831.65

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Solution

The fourth proportional to 92,006.69, 138,009.86 and 28,831.65 is: 43,247.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,006.69 : 138,009.86 = 28,831.65 : x
  2. Step 2: Convert to fraction form
    92,006.69/138,009.86 = 28,831.65/x
  3. Step 3: Cross multiply
    92,006.69x = 138,009.86 × 28,831.65
  4. Step 4: Simplify right side
    92,006.69x = 3,979,051,980.07
  5. Step 5: Solve for x
    x = 3,979,051,980.07/92,006.69
  6. Step 6: Final answer
    x = 43,247.42

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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.