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Finding the Fourth Proportional to 8,661,983.52, 12,992,916.96 and 6,770,316

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Solution

The fourth proportional to 8,661,983.52, 12,992,916.96 and 6,770,316 is: 10,155,428.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661,983.52 : 12,992,916.96 = 6,770,316 : x
  2. Step 2: Convert to fraction form
    8,661,983.52/12,992,916.96 = 6,770,316/x
  3. Step 3: Cross multiply
    8,661,983.52x = 12,992,916.96 × 6,770,316
  4. Step 4: Simplify right side
    8,661,983.52x = 87,966,153,580,959.36
  5. Step 5: Solve for x
    x = 87,966,153,580,959.36/8,661,983.52
  6. Step 6: Final answer
    x = 10,155,428.42

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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.