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Finding the Fourth Proportional to 53,339,978.70, 80,009,968.05 and 52,489,673.10

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Solution

The fourth proportional to 53,339,978.70, 80,009,968.05 and 52,489,673.10 is: 78,734,509.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,339,978.70 : 80,009,968.05 = 52,489,673.10 : x
  2. Step 2: Convert to fraction form
    53,339,978.70/80,009,968.05 = 52,489,673.10/x
  3. Step 3: Cross multiply
    53,339,978.70x = 80,009,968.05 × 52,489,673.10
  4. Step 4: Simplify right side
    53,339,978.70x = 4,199,697,067,685,944.50
  5. Step 5: Solve for x
    x = 4,199,697,067,685,944.50/53,339,978.70
  6. Step 6: Final answer
    x = 78,734,509.65

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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.