Home / 81,623.30-112,639.82-45,813.60

Finding the Fourth Proportional to 81,623.30, 112,639.82 and 45,813.60

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Solution

The fourth proportional to 81,623.30, 112,639.82 and 45,813.60 is: 63,222.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,623.30 : 112,639.82 = 45,813.60 : x
  2. Step 2: Convert to fraction form
    81,623.30/112,639.82 = 45,813.60/x
  3. Step 3: Cross multiply
    81,623.30x = 112,639.82 × 45,813.60
  4. Step 4: Simplify right side
    81,623.30x = 5,160,435,428.48
  5. Step 5: Solve for x
    x = 5,160,435,428.48/81,623.30
  6. Step 6: Final answer
    x = 63,222.58

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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.