Home / 65,489.31-98,213.31-21,106.58

Finding the Fourth Proportional to 65,489.31, 98,213.31 and 21,106.58

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Solution

The fourth proportional to 65,489.31, 98,213.31 and 21,106.58 is: 31,653.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,489.31 : 98,213.31 = 21,106.58 : x
  2. Step 2: Convert to fraction form
    65,489.31/98,213.31 = 21,106.58/x
  3. Step 3: Cross multiply
    65,489.31x = 98,213.31 × 21,106.58
  4. Step 4: Simplify right side
    65,489.31x = 2,072,946,593.51
  5. Step 5: Solve for x
    x = 2,072,946,593.51/65,489.31
  6. Step 6: Final answer
    x = 31,653.21

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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.