Home / 77,661,879.95-107,175,672.03-42,381,962.98

Finding the Fourth Proportional to 77,661,879.95, 107,175,672.03 and 42,381,962.98

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Solution

The fourth proportional to 77,661,879.95, 107,175,672.03 and 42,381,962.98 is: 58,488,351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,661,879.95 : 107,175,672.03 = 42,381,962.98 : x
  2. Step 2: Convert to fraction form
    77,661,879.95/107,175,672.03 = 42,381,962.98/x
  3. Step 3: Cross multiply
    77,661,879.95x = 107,175,672.03 × 42,381,962.98
  4. Step 4: Simplify right side
    77,661,879.95x = 4,542,315,364,344,350
  5. Step 5: Solve for x
    x = 4,542,315,364,344,350/77,661,879.95
  6. Step 6: Final answer
    x = 58,488,351.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.