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Finding the Fourth Proportional to 81,465.58, 112,416.30 and 45,648.67

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Solution

The fourth proportional to 81,465.58, 112,416.30 and 45,648.67 is: 62,991.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,465.58 : 112,416.30 = 45,648.67 : x
  2. Step 2: Convert to fraction form
    81,465.58/112,416.30 = 45,648.67/x
  3. Step 3: Cross multiply
    81,465.58x = 112,416.30 × 45,648.67
  4. Step 4: Simplify right side
    81,465.58x = 5,131,654,558.01
  5. Step 5: Solve for x
    x = 5,131,654,558.01/81,465.58
  6. Step 6: Final answer
    x = 62,991.69

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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.