Home / 66,420,950.40-99,641,689.92-28,082,626.56

Finding the Fourth Proportional to 66,420,950.40, 99,641,689.92 and 28,082,626.56

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Solution

The fourth proportional to 66,420,950.40, 99,641,689.92 and 28,082,626.56 is: 42,128,279.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420,950.40 : 99,641,689.92 = 28,082,626.56 : x
  2. Step 2: Convert to fraction form
    66,420,950.40/99,641,689.92 = 28,082,626.56/x
  3. Step 3: Cross multiply
    66,420,950.40x = 99,641,689.92 × 28,082,626.56
  4. Step 4: Simplify right side
    66,420,950.40x = 2,798,200,367,830,676
  5. Step 5: Solve for x
    x = 2,798,200,367,830,676/66,420,950.40
  6. Step 6: Final answer
    x = 42,128,279.57

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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.