Home / 86,991.75-130,455.62-30,051.16

Finding the Fourth Proportional to 86,991.75, 130,455.62 and 30,051.16

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Solution

The fourth proportional to 86,991.75, 130,455.62 and 30,051.16 is: 45,065.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,991.75 : 130,455.62 = 30,051.16 : x
  2. Step 2: Convert to fraction form
    86,991.75/130,455.62 = 30,051.16/x
  3. Step 3: Cross multiply
    86,991.75x = 130,455.62 × 30,051.16
  4. Step 4: Simplify right side
    86,991.75x = 3,920,342,709.52
  5. Step 5: Solve for x
    x = 3,920,342,709.52/86,991.75
  6. Step 6: Final answer
    x = 45,065.68

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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.