Home / 81,679.37-112,709.13-45,869.09

Finding the Fourth Proportional to 81,679.37, 112,709.13 and 45,869.09

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Solution

The fourth proportional to 81,679.37, 112,709.13 and 45,869.09 is: 63,294.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,679.37 : 112,709.13 = 45,869.09 : x
  2. Step 2: Convert to fraction form
    81,679.37/112,709.13 = 45,869.09/x
  3. Step 3: Cross multiply
    81,679.37x = 112,709.13 × 45,869.09
  4. Step 4: Simplify right side
    81,679.37x = 5,169,865,227.79
  5. Step 5: Solve for x
    x = 5,169,865,227.79/81,679.37
  6. Step 6: Final answer
    x = 63,294.63

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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.