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Finding the Fourth Proportional to 81,335.70, 112,245.66 and 45,525.60

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Solution

The fourth proportional to 81,335.70, 112,245.66 and 45,525.60 is: 62,826.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,335.70 : 112,245.66 = 45,525.60 : x
  2. Step 2: Convert to fraction form
    81,335.70/112,245.66 = 45,525.60/x
  3. Step 3: Cross multiply
    81,335.70x = 112,245.66 × 45,525.60
  4. Step 4: Simplify right side
    81,335.70x = 5,110,051,018.90
  5. Step 5: Solve for x
    x = 5,110,051,018.90/81,335.70
  6. Step 6: Final answer
    x = 62,826.67

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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.