Home / 77,945.20-107,544.51-47,719.50

Finding the Fourth Proportional to 77,945.20, 107,544.51 and 47,719.50

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Solution

The fourth proportional to 77,945.20, 107,544.51 and 47,719.50 is: 65,840.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,945.20 : 107,544.51 = 47,719.50 : x
  2. Step 2: Convert to fraction form
    77,945.20/107,544.51 = 47,719.50/x
  3. Step 3: Cross multiply
    77,945.20x = 107,544.51 × 47,719.50
  4. Step 4: Simplify right side
    77,945.20x = 5,131,970,244.95
  5. Step 5: Solve for x
    x = 5,131,970,244.95/77,945.20
  6. Step 6: Final answer
    x = 65,840.75

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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.