Home / 28,512,062.80-42,769,732.60-8,320,421.20

Finding the Fourth Proportional to 28,512,062.80, 42,769,732.60 and 8,320,421.20

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Solution

The fourth proportional to 28,512,062.80, 42,769,732.60 and 8,320,421.20 is: 12,481,109.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512,062.80 : 42,769,732.60 = 8,320,421.20 : x
  2. Step 2: Convert to fraction form
    28,512,062.80/42,769,732.60 = 8,320,421.20/x
  3. Step 3: Cross multiply
    28,512,062.80x = 42,769,732.60 × 8,320,421.20
  4. Step 4: Simplify right side
    28,512,062.80x = 355,862,189,843,371.12
  5. Step 5: Solve for x
    x = 355,862,189,843,371.12/28,512,062.80
  6. Step 6: Final answer
    x = 12,481,109.92

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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.