Home / 85,783.07-118,352.30-51,778.64

Finding the Fourth Proportional to 85,783.07, 118,352.30 and 51,778.64

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Solution

The fourth proportional to 85,783.07, 118,352.30 and 51,778.64 is: 71,437.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,783.07 : 118,352.30 = 51,778.64 : x
  2. Step 2: Convert to fraction form
    85,783.07/118,352.30 = 51,778.64/x
  3. Step 3: Cross multiply
    85,783.07x = 118,352.30 × 51,778.64
  4. Step 4: Simplify right side
    85,783.07x = 6,128,121,171.86
  5. Step 5: Solve for x
    x = 6,128,121,171.86/85,783.07
  6. Step 6: Final answer
    x = 71,437.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.