Home / 85,441.48-128,064.66-53,435.32

Finding the Fourth Proportional to 85,441.48, 128,064.66 and 53,435.32

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Solution

The fourth proportional to 85,441.48, 128,064.66 and 53,435.32 is: 80,091.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,441.48 : 128,064.66 = 53,435.32 : x
  2. Step 2: Convert to fraction form
    85,441.48/128,064.66 = 53,435.32/x
  3. Step 3: Cross multiply
    85,441.48x = 128,064.66 × 53,435.32
  4. Step 4: Simplify right side
    85,441.48x = 6,843,176,087.79
  5. Step 5: Solve for x
    x = 6,843,176,087.79/85,441.48
  6. Step 6: Final answer
    x = 80,091.97

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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.