Home / 8,045,986.65-12,068,979.98-7,989,999.45

Finding the Fourth Proportional to 8,045,986.65, 12,068,979.98 and 7,989,999.45

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Solution

The fourth proportional to 8,045,986.65, 12,068,979.98 and 7,989,999.45 is: 11,984,999.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,045,986.65 : 12,068,979.98 = 7,989,999.45 : x
  2. Step 2: Convert to fraction form
    8,045,986.65/12,068,979.98 = 7,989,999.45/x
  3. Step 3: Cross multiply
    8,045,986.65x = 12,068,979.98 × 7,989,999.45
  4. Step 4: Simplify right side
    8,045,986.65x = 96,431,143,362,311.02
  5. Step 5: Solve for x
    x = 96,431,143,362,311.02/8,045,986.65
  6. Step 6: Final answer
    x = 11,984,999.18

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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.