Home / 8,178,517.80-12,267,776.70-7,381,356.30

Finding the Fourth Proportional to 8,178,517.80, 12,267,776.70 and 7,381,356.30

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Solution

The fourth proportional to 8,178,517.80, 12,267,776.70 and 7,381,356.30 is: 11,072,034.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178,517.80 : 12,267,776.70 = 7,381,356.30 : x
  2. Step 2: Convert to fraction form
    8,178,517.80/12,267,776.70 = 7,381,356.30/x
  3. Step 3: Cross multiply
    8,178,517.80x = 12,267,776.70 × 7,381,356.30
  4. Step 4: Simplify right side
    8,178,517.80x = 90,552,830,831,538.20
  5. Step 5: Solve for x
    x = 90,552,830,831,538.20/8,178,517.80
  6. Step 6: Final answer
    x = 11,072,034.45

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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.