Home / 85,552.50-128,285.91-26,380.48

Finding the Fourth Proportional to 85,552.50, 128,285.91 and 26,380.48

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Solution

The fourth proportional to 85,552.50, 128,285.91 and 26,380.48 is: 39,557.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,552.50 : 128,285.91 = 26,380.48 : x
  2. Step 2: Convert to fraction form
    85,552.50/128,285.91 = 26,380.48/x
  3. Step 3: Cross multiply
    85,552.50x = 128,285.91 × 26,380.48
  4. Step 4: Simplify right side
    85,552.50x = 3,384,243,241.61
  5. Step 5: Solve for x
    x = 3,384,243,241.61/85,552.50
  6. Step 6: Final answer
    x = 39,557.50

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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.