Home / 81,424.50-112,372.32-47,896.98

Finding the Fourth Proportional to 81,424.50, 112,372.32 and 47,896.98

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Solution

The fourth proportional to 81,424.50, 112,372.32 and 47,896.98 is: 66,101.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,424.50 : 112,372.32 = 47,896.98 : x
  2. Step 2: Convert to fraction form
    81,424.50/112,372.32 = 47,896.98/x
  3. Step 3: Cross multiply
    81,424.50x = 112,372.32 × 47,896.98
  4. Step 4: Simplify right side
    81,424.50x = 5,382,294,763.59
  5. Step 5: Solve for x
    x = 5,382,294,763.59/81,424.50
  6. Step 6: Final answer
    x = 66,101.66

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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.