Home / 54,009.60-80,889.12-52,140.72

Finding the Fourth Proportional to 54,009.60, 80,889.12 and 52,140.72

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Solution

The fourth proportional to 54,009.60, 80,889.12 and 52,140.72 is: 78,090.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,009.60 : 80,889.12 = 52,140.72 : x
  2. Step 2: Convert to fraction form
    54,009.60/80,889.12 = 52,140.72/x
  3. Step 3: Cross multiply
    54,009.60x = 80,889.12 × 52,140.72
  4. Step 4: Simplify right side
    54,009.60x = 4,217,616,956.97
  5. Step 5: Solve for x
    x = 4,217,616,956.97/54,009.60
  6. Step 6: Final answer
    x = 78,090.14

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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.