Home / 66,432,020.40-99,648,030.60-21,007,738.80

Finding the Fourth Proportional to 66,432,020.40, 99,648,030.60 and 21,007,738.80

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Solution

The fourth proportional to 66,432,020.40, 99,648,030.60 and 21,007,738.80 is: 31,511,608.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,432,020.40 : 99,648,030.60 = 21,007,738.80 : x
  2. Step 2: Convert to fraction form
    66,432,020.40/99,648,030.60 = 21,007,738.80/x
  3. Step 3: Cross multiply
    66,432,020.40x = 99,648,030.60 × 21,007,738.80
  4. Step 4: Simplify right side
    66,432,020.40x = 2,093,379,798,779,207.25
  5. Step 5: Solve for x
    x = 2,093,379,798,779,207.25/66,432,020.40
  6. Step 6: Final answer
    x = 31,511,608.20

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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.