Home / 78,487,514.64-108,311,712.21-43,680,195.84

Finding the Fourth Proportional to 78,487,514.64, 108,311,712.21 and 43,680,195.84

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Solution

The fourth proportional to 78,487,514.64, 108,311,712.21 and 43,680,195.84 is: 60,278,081.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,487,514.64 : 108,311,712.21 = 43,680,195.84 : x
  2. Step 2: Convert to fraction form
    78,487,514.64/108,311,712.21 = 43,680,195.84/x
  3. Step 3: Cross multiply
    78,487,514.64x = 108,311,712.21 × 43,680,195.84
  4. Step 4: Simplify right side
    78,487,514.64x = 4,731,076,801,098,519
  5. Step 5: Solve for x
    x = 4,731,076,801,098,519/78,487,514.64
  6. Step 6: Final answer
    x = 60,278,081.46

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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.