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Finding the Fourth Proportional to 81,622.94, 112,648.29 and 45,813.20

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Solution

The fourth proportional to 81,622.94, 112,648.29 and 45,813.20 is: 63,227.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,622.94 : 112,648.29 = 45,813.20 : x
  2. Step 2: Convert to fraction form
    81,622.94/112,648.29 = 45,813.20/x
  3. Step 3: Cross multiply
    81,622.94x = 112,648.29 × 45,813.20
  4. Step 4: Simplify right side
    81,622.94x = 5,160,778,639.43
  5. Step 5: Solve for x
    x = 5,160,778,639.43/81,622.94
  6. Step 6: Final answer
    x = 63,227.06

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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.