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Finding the Fourth Proportional to 53,781,440.80, 80,661,663.60 and 17,879,648.80

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Solution

The fourth proportional to 53,781,440.80, 80,661,663.60 and 17,879,648.80 is: 26,815,983.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,781,440.80 : 80,661,663.60 = 17,879,648.80 : x
  2. Step 2: Convert to fraction form
    53,781,440.80/80,661,663.60 = 17,879,648.80/x
  3. Step 3: Cross multiply
    53,781,440.80x = 80,661,663.60 × 17,879,648.80
  4. Step 4: Simplify right side
    53,781,440.80x = 1,442,202,216,791,743.75
  5. Step 5: Solve for x
    x = 1,442,202,216,791,743.75/53,781,440.80
  6. Step 6: Final answer
    x = 26,815,983.27

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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.