Home / 66,440,422.40-99,674,630.40-21,006,809.60

Finding the Fourth Proportional to 66,440,422.40, 99,674,630.40 and 21,006,809.60

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Solution

The fourth proportional to 66,440,422.40, 99,674,630.40 and 21,006,809.60 is: 31,514,639.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,440,422.40 : 99,674,630.40 = 21,006,809.60 : x
  2. Step 2: Convert to fraction form
    66,440,422.40/99,674,630.40 = 21,006,809.60/x
  3. Step 3: Cross multiply
    66,440,422.40x = 99,674,630.40 × 21,006,809.60
  4. Step 4: Simplify right side
    66,440,422.40x = 2,093,845,982,763,172
  5. Step 5: Solve for x
    x = 2,093,845,982,763,172/66,440,422.40
  6. Step 6: Final answer
    x = 31,514,639.84

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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.