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Finding the Fourth Proportional to 77,946.58, 116,891.16 and 28,013.32

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Solution

The fourth proportional to 77,946.58, 116,891.16 and 28,013.32 is: 42,009.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,946.58 : 116,891.16 = 28,013.32 : x
  2. Step 2: Convert to fraction form
    77,946.58/116,891.16 = 28,013.32/x
  3. Step 3: Cross multiply
    77,946.58x = 116,891.16 × 28,013.32
  4. Step 4: Simplify right side
    77,946.58x = 3,274,509,470.25
  5. Step 5: Solve for x
    x = 3,274,509,470.25/77,946.58
  6. Step 6: Final answer
    x = 42,009.66

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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.