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Finding the Fourth Proportional to 27,287,573.40, 40,932,016.20 and 8,118,955.80

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Solution

The fourth proportional to 27,287,573.40, 40,932,016.20 and 8,118,955.80 is: 12,178,628.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,287,573.40 : 40,932,016.20 = 8,118,955.80 : x
  2. Step 2: Convert to fraction form
    27,287,573.40/40,932,016.20 = 8,118,955.80/x
  3. Step 3: Cross multiply
    27,287,573.40x = 40,932,016.20 × 8,118,955.80
  4. Step 4: Simplify right side
    27,287,573.40x = 332,325,230,332,684
  5. Step 5: Solve for x
    x = 332,325,230,332,684/27,287,573.40
  6. Step 6: Final answer
    x = 12,178,628.91

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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.