Home / 65,981.64-98,969.22-21,629.28

Finding the Fourth Proportional to 65,981.64, 98,969.22 and 21,629.28

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Solution

The fourth proportional to 65,981.64, 98,969.22 and 21,629.28 is: 32,442.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,981.64 : 98,969.22 = 21,629.28 : x
  2. Step 2: Convert to fraction form
    65,981.64/98,969.22 = 21,629.28/x
  3. Step 3: Cross multiply
    65,981.64x = 98,969.22 × 21,629.28
  4. Step 4: Simplify right side
    65,981.64x = 2,140,632,970.76
  5. Step 5: Solve for x
    x = 2,140,632,970.76/65,981.64
  6. Step 6: Final answer
    x = 32,442.86

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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.