Home / 77,147.57-115,534.51-53,388.56

Finding the Fourth Proportional to 77,147.57, 115,534.51 and 53,388.56

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Solution

The fourth proportional to 77,147.57, 115,534.51 and 53,388.56 is: 79,953.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,147.57 : 115,534.51 = 53,388.56 : x
  2. Step 2: Convert to fraction form
    77,147.57/115,534.51 = 53,388.56/x
  3. Step 3: Cross multiply
    77,147.57x = 115,534.51 × 53,388.56
  4. Step 4: Simplify right side
    77,147.57x = 6,168,221,119.21
  5. Step 5: Solve for x
    x = 6,168,221,119.21/77,147.57
  6. Step 6: Final answer
    x = 79,953.54

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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.