Home / 86,947.80-130,449.69-39,579.84

Finding the Fourth Proportional to 86,947.80, 130,449.69 and 39,579.84

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Solution

The fourth proportional to 86,947.80, 130,449.69 and 39,579.84 is: 59,382.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,947.80 : 130,449.69 = 39,579.84 : x
  2. Step 2: Convert to fraction form
    86,947.80/130,449.69 = 39,579.84/x
  3. Step 3: Cross multiply
    86,947.80x = 130,449.69 × 39,579.84
  4. Step 4: Simplify right side
    86,947.80x = 5,163,177,858.25
  5. Step 5: Solve for x
    x = 5,163,177,858.25/86,947.80
  6. Step 6: Final answer
    x = 59,382.50

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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.