Home / 81,759.24-112,828.20-47,769.72

Finding the Fourth Proportional to 81,759.24, 112,828.20 and 47,769.72

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Solution

The fourth proportional to 81,759.24, 112,828.20 and 47,769.72 is: 65,922.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,759.24 : 112,828.20 = 47,769.72 : x
  2. Step 2: Convert to fraction form
    81,759.24/112,828.20 = 47,769.72/x
  3. Step 3: Cross multiply
    81,759.24x = 112,828.20 × 47,769.72
  4. Step 4: Simplify right side
    81,759.24x = 5,389,771,522.10
  5. Step 5: Solve for x
    x = 5,389,771,522.10/81,759.24
  6. Step 6: Final answer
    x = 65,922.48

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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.