Home / 86,980.26-120,029.40-49,254.60

Finding the Fourth Proportional to 86,980.26, 120,029.40 and 49,254.60

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Solution

The fourth proportional to 86,980.26, 120,029.40 and 49,254.60 is: 67,969.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,980.26 : 120,029.40 = 49,254.60 : x
  2. Step 2: Convert to fraction form
    86,980.26/120,029.40 = 49,254.60/x
  3. Step 3: Cross multiply
    86,980.26x = 120,029.40 × 49,254.60
  4. Step 4: Simplify right side
    86,980.26x = 5,912,000,085.24
  5. Step 5: Solve for x
    x = 5,912,000,085.24/86,980.26
  6. Step 6: Final answer
    x = 67,969.45

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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.