Home / 86,923.80-130,389.42-30,764.40

Finding the Fourth Proportional to 86,923.80, 130,389.42 and 30,764.40

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Solution

The fourth proportional to 86,923.80, 130,389.42 and 30,764.40 is: 46,147.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,923.80 : 130,389.42 = 30,764.40 : x
  2. Step 2: Convert to fraction form
    86,923.80/130,389.42 = 30,764.40/x
  3. Step 3: Cross multiply
    86,923.80x = 130,389.42 × 30,764.40
  4. Step 4: Simplify right side
    86,923.80x = 4,011,352,272.65
  5. Step 5: Solve for x
    x = 4,011,352,272.65/86,923.80
  6. Step 6: Final answer
    x = 46,147.92

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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.