Home / 77,583.09-107,076.24-47,385.78

Finding the Fourth Proportional to 77,583.09, 107,076.24 and 47,385.78

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Solution

The fourth proportional to 77,583.09, 107,076.24 and 47,385.78 is: 65,399.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,583.09 : 107,076.24 = 47,385.78 : x
  2. Step 2: Convert to fraction form
    77,583.09/107,076.24 = 47,385.78/x
  3. Step 3: Cross multiply
    77,583.09x = 107,076.24 × 47,385.78
  4. Step 4: Simplify right side
    77,583.09x = 5,073,891,151.87
  5. Step 5: Solve for x
    x = 5,073,891,151.87/77,583.09
  6. Step 6: Final answer
    x = 65,399.45

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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.