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Finding the Fourth Proportional to 65,630.83, 98,461.92 and 21,257.63

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Solution

The fourth proportional to 65,630.83, 98,461.92 and 21,257.63 is: 31,891.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,630.83 : 98,461.92 = 21,257.63 : x
  2. Step 2: Convert to fraction form
    65,630.83/98,461.92 = 21,257.63/x
  3. Step 3: Cross multiply
    65,630.83x = 98,461.92 × 21,257.63
  4. Step 4: Simplify right side
    65,630.83x = 2,093,067,064.45
  5. Step 5: Solve for x
    x = 2,093,067,064.45/65,630.83
  6. Step 6: Final answer
    x = 31,891.52

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1.5x scale

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.