Home / 86,811-130,216.37-57,013.35

Finding the Fourth Proportional to 86,811, 130,216.37 and 57,013.35

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Solution

The fourth proportional to 86,811, 130,216.37 and 57,013.35 is: 85,519.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,811 : 130,216.37 = 57,013.35 : x
  2. Step 2: Convert to fraction form
    86,811/130,216.37 = 57,013.35/x
  3. Step 3: Cross multiply
    86,811x = 130,216.37 × 57,013.35
  4. Step 4: Simplify right side
    86,811x = 7,424,071,193.47
  5. Step 5: Solve for x
    x = 7,424,071,193.47/86,811
  6. Step 6: Final answer
    x = 85,519.94

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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.