Home / 78,653.08-117,908.32-39,222.28

Finding the Fourth Proportional to 78,653.08, 117,908.32 and 39,222.28

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Solution

The fourth proportional to 78,653.08, 117,908.32 and 39,222.28 is: 58,797.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,653.08 : 117,908.32 = 39,222.28 : x
  2. Step 2: Convert to fraction form
    78,653.08/117,908.32 = 39,222.28/x
  3. Step 3: Cross multiply
    78,653.08x = 117,908.32 × 39,222.28
  4. Step 4: Simplify right side
    78,653.08x = 4,624,633,141.37
  5. Step 5: Solve for x
    x = 4,624,633,141.37/78,653.08
  6. Step 6: Final answer
    x = 58,797.86

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1.5x scale

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.