Home / 65,677.21-98,530.22-21,308.45

Finding the Fourth Proportional to 65,677.21, 98,530.22 and 21,308.45

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Solution

The fourth proportional to 65,677.21, 98,530.22 and 21,308.45 is: 31,967.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,677.21 : 98,530.22 = 21,308.45 : x
  2. Step 2: Convert to fraction form
    65,677.21/98,530.22 = 21,308.45/x
  3. Step 3: Cross multiply
    65,677.21x = 98,530.22 × 21,308.45
  4. Step 4: Simplify right side
    65,677.21x = 2,099,525,826.98
  5. Step 5: Solve for x
    x = 2,099,525,826.98/65,677.21
  6. Step 6: Final answer
    x = 31,967.34

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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.