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Finding the Fourth Proportional to 81,653.50, 112,673.19 and 45,847.54

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Solution

The fourth proportional to 81,653.50, 112,673.19 and 45,847.54 is: 63,264.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,653.50 : 112,673.19 = 45,847.54 : x
  2. Step 2: Convert to fraction form
    81,653.50/112,673.19 = 45,847.54/x
  3. Step 3: Cross multiply
    81,653.50x = 112,673.19 × 45,847.54
  4. Step 4: Simplify right side
    81,653.50x = 5,165,788,585.45
  5. Step 5: Solve for x
    x = 5,165,788,585.45/81,653.50
  6. Step 6: Final answer
    x = 63,264.75

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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.