Home / 28,758,720.78-43,138,966.86-12,576,342.30

Finding the Fourth Proportional to 28,758,720.78, 43,138,966.86 and 12,576,342.30

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Solution

The fourth proportional to 28,758,720.78, 43,138,966.86 and 12,576,342.30 is: 18,864,900.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,758,720.78 : 43,138,966.86 = 12,576,342.30 : x
  2. Step 2: Convert to fraction form
    28,758,720.78/43,138,966.86 = 12,576,342.30/x
  3. Step 3: Cross multiply
    28,758,720.78x = 43,138,966.86 × 12,576,342.30
  4. Step 4: Simplify right side
    28,758,720.78x = 542,530,413,699,716.19
  5. Step 5: Solve for x
    x = 542,530,413,699,716.19/28,758,720.78
  6. Step 6: Final answer
    x = 18,864,900.77

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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.