Home / 85,752.08-118,345.20-49,945.40

Finding the Fourth Proportional to 85,752.08, 118,345.20 and 49,945.40

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Solution

The fourth proportional to 85,752.08, 118,345.20 and 49,945.40 is: 68,928.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,752.08 : 118,345.20 = 49,945.40 : x
  2. Step 2: Convert to fraction form
    85,752.08/118,345.20 = 49,945.40/x
  3. Step 3: Cross multiply
    85,752.08x = 118,345.20 × 49,945.40
  4. Step 4: Simplify right side
    85,752.08x = 5,910,798,352.08
  5. Step 5: Solve for x
    x = 5,910,798,352.08/85,752.08
  6. Step 6: Final answer
    x = 68,928.92

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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.