Home / 81,631.40-112,662.70-45,341

Finding the Fourth Proportional to 81,631.40, 112,662.70 and 45,341

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Solution

The fourth proportional to 81,631.40, 112,662.70 and 45,341 is: 62,576.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,631.40 : 112,662.70 = 45,341 : x
  2. Step 2: Convert to fraction form
    81,631.40/112,662.70 = 45,341/x
  3. Step 3: Cross multiply
    81,631.40x = 112,662.70 × 45,341
  4. Step 4: Simplify right side
    81,631.40x = 5,108,239,480.70
  5. Step 5: Solve for x
    x = 5,108,239,480.70/81,631.40
  6. Step 6: Final answer
    x = 62,576.89

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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.