Home / 86,973.82-130,359.93-40,129.18

Finding the Fourth Proportional to 86,973.82, 130,359.93 and 40,129.18

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Solution

The fourth proportional to 86,973.82, 130,359.93 and 40,129.18 is: 60,147.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,973.82 : 130,359.93 = 40,129.18 : x
  2. Step 2: Convert to fraction form
    86,973.82/130,359.93 = 40,129.18/x
  3. Step 3: Cross multiply
    86,973.82x = 130,359.93 × 40,129.18
  4. Step 4: Simplify right side
    86,973.82x = 5,231,237,095.76
  5. Step 5: Solve for x
    x = 5,231,237,095.76/86,973.82
  6. Step 6: Final answer
    x = 60,147.26

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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.