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Finding the Fourth Proportional to 28,977,324.80, 43,465,987.20 and 28,529,427.20

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Solution

The fourth proportional to 28,977,324.80, 43,465,987.20 and 28,529,427.20 is: 42,794,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,977,324.80 : 43,465,987.20 = 28,529,427.20 : x
  2. Step 2: Convert to fraction form
    28,977,324.80/43,465,987.20 = 28,529,427.20/x
  3. Step 3: Cross multiply
    28,977,324.80x = 43,465,987.20 × 28,529,427.20
  4. Step 4: Simplify right side
    28,977,324.80x = 1,240,059,717,498,532
  5. Step 5: Solve for x
    x = 1,240,059,717,498,532/28,977,324.80
  6. Step 6: Final answer
    x = 42,794,140.80

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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.