Home / 86,721.65-130,054.79-27,543.48

Finding the Fourth Proportional to 86,721.65, 130,054.79 and 27,543.48

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Solution

The fourth proportional to 86,721.65, 130,054.79 and 27,543.48 is: 41,306.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,721.65 : 130,054.79 = 27,543.48 : x
  2. Step 2: Convert to fraction form
    86,721.65/130,054.79 = 27,543.48/x
  3. Step 3: Cross multiply
    86,721.65x = 130,054.79 × 27,543.48
  4. Step 4: Simplify right side
    86,721.65x = 3,582,161,507.27
  5. Step 5: Solve for x
    x = 3,582,161,507.27/86,721.65
  6. Step 6: Final answer
    x = 41,306.43

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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.