Home / 86,289.76-129,410.89-54,652.37

Finding the Fourth Proportional to 86,289.76, 129,410.89 and 54,652.37

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Solution

The fourth proportional to 86,289.76, 129,410.89 and 54,652.37 is: 81,963.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,289.76 : 129,410.89 = 54,652.37 : x
  2. Step 2: Convert to fraction form
    86,289.76/129,410.89 = 54,652.37/x
  3. Step 3: Cross multiply
    86,289.76x = 129,410.89 × 54,652.37
  4. Step 4: Simplify right side
    86,289.76x = 7,072,611,842.31
  5. Step 5: Solve for x
    x = 7,072,611,842.31/86,289.76
  6. Step 6: Final answer
    x = 81,963.51

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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.