Home / 53,775.20-80,727.60-53,386.40

Finding the Fourth Proportional to 53,775.20, 80,727.60 and 53,386.40

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Solution

The fourth proportional to 53,775.20, 80,727.60 and 53,386.40 is: 80,143.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,775.20 : 80,727.60 = 53,386.40 : x
  2. Step 2: Convert to fraction form
    53,775.20/80,727.60 = 53,386.40/x
  3. Step 3: Cross multiply
    53,775.20x = 80,727.60 × 53,386.40
  4. Step 4: Simplify right side
    53,775.20x = 4,309,755,944.64
  5. Step 5: Solve for x
    x = 4,309,755,944.64/53,775.20
  6. Step 6: Final answer
    x = 80,143.93

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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.