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Finding the Fourth Proportional to 81,630.44, 112,650.45 and 45,820.88

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Solution

The fourth proportional to 81,630.44, 112,650.45 and 45,820.88 is: 63,233.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,630.44 : 112,650.45 = 45,820.88 : x
  2. Step 2: Convert to fraction form
    81,630.44/112,650.45 = 45,820.88/x
  3. Step 3: Cross multiply
    81,630.44x = 112,650.45 × 45,820.88
  4. Step 4: Simplify right side
    81,630.44x = 5,161,742,751.40
  5. Step 5: Solve for x
    x = 5,161,742,751.40/81,630.44
  6. Step 6: Final answer
    x = 63,233.06

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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.