Home / 85,816.16-128,703.74-29,658.25

Finding the Fourth Proportional to 85,816.16, 128,703.74 and 29,658.25

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Solution

The fourth proportional to 85,816.16, 128,703.74 and 29,658.25 is: 44,480.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,816.16 : 128,703.74 = 29,658.25 : x
  2. Step 2: Convert to fraction form
    85,816.16/128,703.74 = 29,658.25/x
  3. Step 3: Cross multiply
    85,816.16x = 128,703.74 × 29,658.25
  4. Step 4: Simplify right side
    85,816.16x = 3,817,127,709.44
  5. Step 5: Solve for x
    x = 3,817,127,709.44/85,816.16
  6. Step 6: Final answer
    x = 44,480.29

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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.