Home / 85,698.20-128,526.33-35,778.71

Finding the Fourth Proportional to 85,698.20, 128,526.33 and 35,778.71

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Solution

The fourth proportional to 85,698.20, 128,526.33 and 35,778.71 is: 53,659.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,698.20 : 128,526.33 = 35,778.71 : x
  2. Step 2: Convert to fraction form
    85,698.20/128,526.33 = 35,778.71/x
  3. Step 3: Cross multiply
    85,698.20x = 128,526.33 × 35,778.71
  4. Step 4: Simplify right side
    85,698.20x = 4,598,506,288.43
  5. Step 5: Solve for x
    x = 4,598,506,288.43/85,698.20
  6. Step 6: Final answer
    x = 53,659.31

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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.