Home / 81,798.48-122,699.27-25,637.35

Finding the Fourth Proportional to 81,798.48, 122,699.27 and 25,637.35

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Solution

The fourth proportional to 81,798.48, 122,699.27 and 25,637.35 is: 38,456.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,798.48 : 122,699.27 = 25,637.35 : x
  2. Step 2: Convert to fraction form
    81,798.48/122,699.27 = 25,637.35/x
  3. Step 3: Cross multiply
    81,798.48x = 122,699.27 × 25,637.35
  4. Step 4: Simplify right side
    81,798.48x = 3,145,684,129.73
  5. Step 5: Solve for x
    x = 3,145,684,129.73/81,798.48
  6. Step 6: Final answer
    x = 38,456.51

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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.