Home / 28,514,743.20-42,772,114.80-20,861,992.80

Finding the Fourth Proportional to 28,514,743.20, 42,772,114.80 and 20,861,992.80

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Solution

The fourth proportional to 28,514,743.20, 42,772,114.80 and 20,861,992.80 is: 31,292,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,514,743.20 : 42,772,114.80 = 20,861,992.80 : x
  2. Step 2: Convert to fraction form
    28,514,743.20/42,772,114.80 = 20,861,992.80/x
  3. Step 3: Cross multiply
    28,514,743.20x = 42,772,114.80 × 20,861,992.80
  4. Step 4: Simplify right side
    28,514,743.20x = 892,311,550,998,373.38
  5. Step 5: Solve for x
    x = 892,311,550,998,373.38/28,514,743.20
  6. Step 6: Final answer
    x = 31,292,989.20

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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.