Home / 81,392.56-122,090.46-36,988.36

Finding the Fourth Proportional to 81,392.56, 122,090.46 and 36,988.36

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Solution

The fourth proportional to 81,392.56, 122,090.46 and 36,988.36 is: 55,483.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,392.56 : 122,090.46 = 36,988.36 : x
  2. Step 2: Convert to fraction form
    81,392.56/122,090.46 = 36,988.36/x
  3. Step 3: Cross multiply
    81,392.56x = 122,090.46 × 36,988.36
  4. Step 4: Simplify right side
    81,392.56x = 4,515,925,887.05
  5. Step 5: Solve for x
    x = 4,515,925,887.05/81,392.56
  6. Step 6: Final answer
    x = 55,483.28

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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.