Home / 86,710.31-129,977.37-58,633.56

Finding the Fourth Proportional to 86,710.31, 129,977.37 and 58,633.56

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Solution

The fourth proportional to 86,710.31, 129,977.37 and 58,633.56 is: 87,890.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,710.31 : 129,977.37 = 58,633.56 : x
  2. Step 2: Convert to fraction form
    86,710.31/129,977.37 = 58,633.56/x
  3. Step 3: Cross multiply
    86,710.31x = 129,977.37 × 58,633.56
  4. Step 4: Simplify right side
    86,710.31x = 7,621,035,922.54
  5. Step 5: Solve for x
    x = 7,621,035,922.54/86,710.31
  6. Step 6: Final answer
    x = 87,890.77

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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.