Home / 81,420.29-122,131.04-25,259.34

Finding the Fourth Proportional to 81,420.29, 122,131.04 and 25,259.34

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Solution

The fourth proportional to 81,420.29, 122,131.04 and 25,259.34 is: 37,889.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,420.29 : 122,131.04 = 25,259.34 : x
  2. Step 2: Convert to fraction form
    81,420.29/122,131.04 = 25,259.34/x
  3. Step 3: Cross multiply
    81,420.29x = 122,131.04 × 25,259.34
  4. Step 4: Simplify right side
    81,420.29x = 3,084,949,463.91
  5. Step 5: Solve for x
    x = 3,084,949,463.91/81,420.29
  6. Step 6: Final answer
    x = 37,889.20

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1.5x scale

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.