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Finding the Fourth Proportional to 64,640,209.70, 96,960,314.55 and 40,453,739.30

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Solution

The fourth proportional to 64,640,209.70, 96,960,314.55 and 40,453,739.30 is: 60,680,608.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,640,209.70 : 96,960,314.55 = 40,453,739.30 : x
  2. Step 2: Convert to fraction form
    64,640,209.70/96,960,314.55 = 40,453,739.30/x
  3. Step 3: Cross multiply
    64,640,209.70x = 96,960,314.55 × 40,453,739.30
  4. Step 4: Simplify right side
    64,640,209.70x = 3,922,407,287,251,696.50
  5. Step 5: Solve for x
    x = 3,922,407,287,251,696.50/64,640,209.70
  6. Step 6: Final answer
    x = 60,680,608.95

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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.