Home / 85,653.09-128,626.65-52,567.43

Finding the Fourth Proportional to 85,653.09, 128,626.65 and 52,567.43

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Solution

The fourth proportional to 85,653.09, 128,626.65 and 52,567.43 is: 78,941.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,653.09 : 128,626.65 = 52,567.43 : x
  2. Step 2: Convert to fraction form
    85,653.09/128,626.65 = 52,567.43/x
  3. Step 3: Cross multiply
    85,653.09x = 128,626.65 × 52,567.43
  4. Step 4: Simplify right side
    85,653.09x = 6,761,571,776.88
  5. Step 5: Solve for x
    x = 6,761,571,776.88/85,653.09
  6. Step 6: Final answer
    x = 78,941.36

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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.