Home / 85,631.19-128,447.31-22,450.74

Finding the Fourth Proportional to 85,631.19, 128,447.31 and 22,450.74

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Solution

The fourth proportional to 85,631.19, 128,447.31 and 22,450.74 is: 33,676.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,631.19 : 128,447.31 = 22,450.74 : x
  2. Step 2: Convert to fraction form
    85,631.19/128,447.31 = 22,450.74/x
  3. Step 3: Cross multiply
    85,631.19x = 128,447.31 × 22,450.74
  4. Step 4: Simplify right side
    85,631.19x = 2,883,737,048.26
  5. Step 5: Solve for x
    x = 2,883,737,048.26/85,631.19
  6. Step 6: Final answer
    x = 33,676.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.