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Finding the Fourth Proportional to 115,279.56, 159,085.80 and 62,287.56

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Solution

The fourth proportional to 115,279.56, 159,085.80 and 62,287.56 is: 85,956.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,279.56 : 159,085.80 = 62,287.56 : x
  2. Step 2: Convert to fraction form
    115,279.56/159,085.80 = 62,287.56/x
  3. Step 3: Cross multiply
    115,279.56x = 159,085.80 × 62,287.56
  4. Step 4: Simplify right side
    115,279.56x = 9,909,066,312.65
  5. Step 5: Solve for x
    x = 9,909,066,312.65/115,279.56
  6. Step 6: Final answer
    x = 85,956.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.