Home / 81,485.31-112,454.92-45,675.33

Finding the Fourth Proportional to 81,485.31, 112,454.92 and 45,675.33

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Solution

The fourth proportional to 81,485.31, 112,454.92 and 45,675.33 is: 63,034.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,485.31 : 112,454.92 = 45,675.33 : x
  2. Step 2: Convert to fraction form
    81,485.31/112,454.92 = 45,675.33/x
  3. Step 3: Cross multiply
    81,485.31x = 112,454.92 × 45,675.33
  4. Step 4: Simplify right side
    81,485.31x = 5,136,415,018.85
  5. Step 5: Solve for x
    x = 5,136,415,018.85/81,485.31
  6. Step 6: Final answer
    x = 63,034.86

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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.