Home / 77,247,128.70-115,945,342.65-47,014,040.70

Finding the Fourth Proportional to 77,247,128.70, 115,945,342.65 and 47,014,040.70

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Solution

The fourth proportional to 77,247,128.70, 115,945,342.65 and 47,014,040.70 is: 70,566,494.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,247,128.70 : 115,945,342.65 = 47,014,040.70 : x
  2. Step 2: Convert to fraction form
    77,247,128.70/115,945,342.65 = 47,014,040.70/x
  3. Step 3: Cross multiply
    77,247,128.70x = 115,945,342.65 × 47,014,040.70
  4. Step 4: Simplify right side
    77,247,128.70x = 5,451,059,058,322,546
  5. Step 5: Solve for x
    x = 5,451,059,058,322,546/77,247,128.70
  6. Step 6: Final answer
    x = 70,566,494.19

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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.