Home / 85,947.84-128,922.24-39,168

Finding the Fourth Proportional to 85,947.84, 128,922.24 and 39,168

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Solution

The fourth proportional to 85,947.84, 128,922.24 and 39,168 is: 58,752.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,947.84 : 128,922.24 = 39,168 : x
  2. Step 2: Convert to fraction form
    85,947.84/128,922.24 = 39,168/x
  3. Step 3: Cross multiply
    85,947.84x = 128,922.24 × 39,168
  4. Step 4: Simplify right side
    85,947.84x = 5,049,626,296.32
  5. Step 5: Solve for x
    x = 5,049,626,296.32/85,947.84
  6. Step 6: Final answer
    x = 58,752.22

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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.