Home / 86,972.32-130,424.44-30,790.72

Finding the Fourth Proportional to 86,972.32, 130,424.44 and 30,790.72

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Solution

The fourth proportional to 86,972.32, 130,424.44 and 30,790.72 is: 46,174.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,972.32 : 130,424.44 = 30,790.72 : x
  2. Step 2: Convert to fraction form
    86,972.32/130,424.44 = 30,790.72/x
  3. Step 3: Cross multiply
    86,972.32x = 130,424.44 × 30,790.72
  4. Step 4: Simplify right side
    86,972.32x = 4,015,862,413.20
  5. Step 5: Solve for x
    x = 4,015,862,413.20/86,972.32
  6. Step 6: Final answer
    x = 46,174.03

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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.