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Finding the Fourth Proportional to 66,897,761.19, 100,346,446.58 and 18,375,661.32

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Solution

The fourth proportional to 66,897,761.19, 100,346,446.58 and 18,375,661.32 is: 27,563,438.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,897,761.19 : 100,346,446.58 = 18,375,661.32 : x
  2. Step 2: Convert to fraction form
    66,897,761.19/100,346,446.58 = 18,375,661.32/x
  3. Step 3: Cross multiply
    66,897,761.19x = 100,346,446.58 × 18,375,661.32
  4. Step 4: Simplify right side
    66,897,761.19x = 1,843,932,316,927,674
  5. Step 5: Solve for x
    x = 1,843,932,316,927,674/66,897,761.19
  6. Step 6: Final answer
    x = 27,563,438.36

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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.