Home / 81,980.72-122,985.09-37,611.27

Finding the Fourth Proportional to 81,980.72, 122,985.09 and 37,611.27

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Solution

The fourth proportional to 81,980.72, 122,985.09 and 37,611.27 is: 56,423.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,980.72 : 122,985.09 = 37,611.27 : x
  2. Step 2: Convert to fraction form
    81,980.72/122,985.09 = 37,611.27/x
  3. Step 3: Cross multiply
    81,980.72x = 122,985.09 × 37,611.27
  4. Step 4: Simplify right side
    81,980.72x = 4,625,625,971.25
  5. Step 5: Solve for x
    x = 4,625,625,971.25/81,980.72
  6. Step 6: Final answer
    x = 56,423.34

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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.