Home / 86,870.55-130,305.75-30,680.11

Finding the Fourth Proportional to 86,870.55, 130,305.75 and 30,680.11

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Solution

The fourth proportional to 86,870.55, 130,305.75 and 30,680.11 is: 46,020.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,870.55 : 130,305.75 = 30,680.11 : x
  2. Step 2: Convert to fraction form
    86,870.55/130,305.75 = 30,680.11/x
  3. Step 3: Cross multiply
    86,870.55x = 130,305.75 × 30,680.11
  4. Step 4: Simplify right side
    86,870.55x = 3,997,794,743.63
  5. Step 5: Solve for x
    x = 3,997,794,743.63/86,870.55
  6. Step 6: Final answer
    x = 46,020.14

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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.