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Finding the Fourth Proportional to 78,903.77, 118,356.69 and 26,313.27

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Solution

The fourth proportional to 78,903.77, 118,356.69 and 26,313.27 is: 39,470.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,903.77 : 118,356.69 = 26,313.27 : x
  2. Step 2: Convert to fraction form
    78,903.77/118,356.69 = 26,313.27/x
  3. Step 3: Cross multiply
    78,903.77x = 118,356.69 × 26,313.27
  4. Step 4: Simplify right side
    78,903.77x = 3,114,351,540.28
  5. Step 5: Solve for x
    x = 3,114,351,540.28/78,903.77
  6. Step 6: Final answer
    x = 39,470.25

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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.