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Finding the Fourth Proportional to 115,699.70, 159,663.09 and 62,707.70

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Solution

The fourth proportional to 115,699.70, 159,663.09 and 62,707.70 is: 86,535.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,699.70 : 159,663.09 = 62,707.70 : x
  2. Step 2: Convert to fraction form
    115,699.70/159,663.09 = 62,707.70/x
  3. Step 3: Cross multiply
    115,699.70x = 159,663.09 × 62,707.70
  4. Step 4: Simplify right side
    115,699.70x = 10,012,105,148.79
  5. Step 5: Solve for x
    x = 10,012,105,148.79/115,699.70
  6. Step 6: Final answer
    x = 86,535.27

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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.