Home / 75,971.76-104,840.40-41,980.15

Finding the Fourth Proportional to 75,971.76, 104,840.40 and 41,980.15

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Solution

The fourth proportional to 75,971.76, 104,840.40 and 41,980.15 is: 57,932.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,971.76 : 104,840.40 = 41,980.15 : x
  2. Step 2: Convert to fraction form
    75,971.76/104,840.40 = 41,980.15/x
  3. Step 3: Cross multiply
    75,971.76x = 104,840.40 × 41,980.15
  4. Step 4: Simplify right side
    75,971.76x = 4,401,215,718.06
  5. Step 5: Solve for x
    x = 4,401,215,718.06/75,971.76
  6. Step 6: Final answer
    x = 57,932.26

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1.5x scale

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.