Home / 81,626.40-112,644.48-45,819.84

Finding the Fourth Proportional to 81,626.40, 112,644.48 and 45,819.84

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Solution

The fourth proportional to 81,626.40, 112,644.48 and 45,819.84 is: 63,231.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,626.40 : 112,644.48 = 45,819.84 : x
  2. Step 2: Convert to fraction form
    81,626.40/112,644.48 = 45,819.84/x
  3. Step 3: Cross multiply
    81,626.40x = 112,644.48 × 45,819.84
  4. Step 4: Simplify right side
    81,626.40x = 5,161,352,050.48
  5. Step 5: Solve for x
    x = 5,161,352,050.48/81,626.40
  6. Step 6: Final answer
    x = 63,231.41

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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.