Home / 85,829.85-128,744.78-59,257.80

Finding the Fourth Proportional to 85,829.85, 128,744.78 and 59,257.80

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Solution

The fourth proportional to 85,829.85, 128,744.78 and 59,257.80 is: 88,886.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,829.85 : 128,744.78 = 59,257.80 : x
  2. Step 2: Convert to fraction form
    85,829.85/128,744.78 = 59,257.80/x
  3. Step 3: Cross multiply
    85,829.85x = 128,744.78 × 59,257.80
  4. Step 4: Simplify right side
    85,829.85x = 7,629,132,128.00
  5. Step 5: Solve for x
    x = 7,629,132,128.00/85,829.85
  6. Step 6: Final answer
    x = 88,886.70

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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.