Home / 77,231,477.70-115,847,216.55-40,825,800.90

Finding the Fourth Proportional to 77,231,477.70, 115,847,216.55 and 40,825,800.90

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Solution

The fourth proportional to 77,231,477.70, 115,847,216.55 and 40,825,800.90 is: 61,238,701.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,231,477.70 : 115,847,216.55 = 40,825,800.90 : x
  2. Step 2: Convert to fraction form
    77,231,477.70/115,847,216.55 = 40,825,800.90/x
  3. Step 3: Cross multiply
    77,231,477.70x = 115,847,216.55 × 40,825,800.90
  4. Step 4: Simplify right side
    77,231,477.70x = 4,729,555,397,689,485
  5. Step 5: Solve for x
    x = 4,729,555,397,689,485/77,231,477.70
  6. Step 6: Final answer
    x = 61,238,701.35

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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.