Home / 78,701,490.84-117,269,835.63-70,115,853.72

Finding the Fourth Proportional to 78,701,490.84, 117,269,835.63 and 70,115,853.72

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Solution

The fourth proportional to 78,701,490.84, 117,269,835.63 and 70,115,853.72 is: 104,476,732.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,701,490.84 : 117,269,835.63 = 70,115,853.72 : x
  2. Step 2: Convert to fraction form
    78,701,490.84/117,269,835.63 = 70,115,853.72/x
  3. Step 3: Cross multiply
    78,701,490.84x = 117,269,835.63 × 70,115,853.72
  4. Step 4: Simplify right side
    78,701,490.84x = 8,222,474,640,801,524
  5. Step 5: Solve for x
    x = 8,222,474,640,801,524/78,701,490.84
  6. Step 6: Final answer
    x = 104,476,732.94

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.