Home / 78,705,435.88-117,816,015.30-51,352,831.72

Finding the Fourth Proportional to 78,705,435.88, 117,816,015.30 and 51,352,831.72

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Solution

The fourth proportional to 78,705,435.88, 117,816,015.30 and 51,352,831.72 is: 76,871,259.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,705,435.88 : 117,816,015.30 = 51,352,831.72 : x
  2. Step 2: Convert to fraction form
    78,705,435.88/117,816,015.30 = 51,352,831.72/x
  3. Step 3: Cross multiply
    78,705,435.88x = 117,816,015.30 × 51,352,831.72
  4. Step 4: Simplify right side
    78,705,435.88x = 6,050,186,007,621,845
  5. Step 5: Solve for x
    x = 6,050,186,007,621,845/78,705,435.88
  6. Step 6: Final answer
    x = 76,871,259.78

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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.