Home / 85,558.99-128,328.68-22,385.21

Finding the Fourth Proportional to 85,558.99, 128,328.68 and 22,385.21

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Solution

The fourth proportional to 85,558.99, 128,328.68 and 22,385.21 is: 33,575.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,558.99 : 128,328.68 = 22,385.21 : x
  2. Step 2: Convert to fraction form
    85,558.99/128,328.68 = 22,385.21/x
  3. Step 3: Cross multiply
    85,558.99x = 128,328.68 × 22,385.21
  4. Step 4: Simplify right side
    85,558.99x = 2,872,664,659.72
  5. Step 5: Solve for x
    x = 2,872,664,659.72/85,558.99
  6. Step 6: Final answer
    x = 33,575.25

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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.