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Finding the Fourth Proportional to 8,069,812.80, 12,111,328.80 and 8,006,827.20

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Solution

The fourth proportional to 8,069,812.80, 12,111,328.80 and 8,006,827.20 is: 12,016,798.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,069,812.80 : 12,111,328.80 = 8,006,827.20 : x
  2. Step 2: Convert to fraction form
    8,069,812.80/12,111,328.80 = 8,006,827.20/x
  3. Step 3: Cross multiply
    8,069,812.80x = 12,111,328.80 × 8,006,827.20
  4. Step 4: Simplify right side
    8,069,812.80x = 96,973,316,863,983.38
  5. Step 5: Solve for x
    x = 96,973,316,863,983.38/8,069,812.80
  6. Step 6: Final answer
    x = 12,016,798.81

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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.