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Finding the Fourth Proportional to 66,589,822.40, 99,891,386.40 and 18,068,446.40

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Solution

The fourth proportional to 66,589,822.40, 99,891,386.40 and 18,068,446.40 is: 27,104,474.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,589,822.40 : 99,891,386.40 = 18,068,446.40 : x
  2. Step 2: Convert to fraction form
    66,589,822.40/99,891,386.40 = 18,068,446.40/x
  3. Step 3: Cross multiply
    66,589,822.40x = 99,891,386.40 × 18,068,446.40
  4. Step 4: Simplify right side
    66,589,822.40x = 1,804,882,160,990,089
  5. Step 5: Solve for x
    x = 1,804,882,160,990,089/66,589,822.40
  6. Step 6: Final answer
    x = 27,104,474.77

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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.