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Finding the Fourth Proportional to 172,679,454.80, 258,986,004.60 and 51,514,859.60

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Solution

The fourth proportional to 172,679,454.80, 258,986,004.60 and 51,514,859.60 is: 77,262,391.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,679,454.80 : 258,986,004.60 = 51,514,859.60 : x
  2. Step 2: Convert to fraction form
    172,679,454.80/258,986,004.60 = 51,514,859.60/x
  3. Step 3: Cross multiply
    172,679,454.80x = 258,986,004.60 × 51,514,859.60
  4. Step 4: Simplify right side
    172,679,454.80x = 13,341,627,665,333,954
  5. Step 5: Solve for x
    x = 13,341,627,665,333,954/172,679,454.80
  6. Step 6: Final answer
    x = 77,262,391.64

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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.