Home / 86,929.20-119,958.14-53,388.72

Finding the Fourth Proportional to 86,929.20, 119,958.14 and 53,388.72

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Solution

The fourth proportional to 86,929.20, 119,958.14 and 53,388.72 is: 73,673.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,929.20 : 119,958.14 = 53,388.72 : x
  2. Step 2: Convert to fraction form
    86,929.20/119,958.14 = 53,388.72/x
  3. Step 3: Cross multiply
    86,929.20x = 119,958.14 × 53,388.72
  4. Step 4: Simplify right side
    86,929.20x = 6,404,411,548.18
  5. Step 5: Solve for x
    x = 6,404,411,548.18/86,929.20
  6. Step 6: Final answer
    x = 73,673.88

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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.