Home / 72,139,628.94-108,211,018.77-43,409,797.26

Finding the Fourth Proportional to 72,139,628.94, 108,211,018.77 and 43,409,797.26

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Solution

The fourth proportional to 72,139,628.94, 108,211,018.77 and 43,409,797.26 is: 65,115,643.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,139,628.94 : 108,211,018.77 = 43,409,797.26 : x
  2. Step 2: Convert to fraction form
    72,139,628.94/108,211,018.77 = 43,409,797.26/x
  3. Step 3: Cross multiply
    72,139,628.94x = 108,211,018.77 × 43,409,797.26
  4. Step 4: Simplify right side
    72,139,628.94x = 4,697,418,386,103,754
  5. Step 5: Solve for x
    x = 4,697,418,386,103,754/72,139,628.94
  6. Step 6: Final answer
    x = 65,115,643.86

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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.