Home / 86,928.03-130,439.43-57,359.79

Finding the Fourth Proportional to 86,928.03, 130,439.43 and 57,359.79

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Solution

The fourth proportional to 86,928.03, 130,439.43 and 57,359.79 is: 86,070.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,928.03 : 130,439.43 = 57,359.79 : x
  2. Step 2: Convert to fraction form
    86,928.03/130,439.43 = 57,359.79/x
  3. Step 3: Cross multiply
    86,928.03x = 130,439.43 × 57,359.79
  4. Step 4: Simplify right side
    86,928.03x = 7,481,978,312.52
  5. Step 5: Solve for x
    x = 7,481,978,312.52/86,928.03
  6. Step 6: Final answer
    x = 86,070.95

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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.