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Finding the Fourth Proportional to 80,028,205.80, 112,341,819 and 80,028,205.80

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Solution

The fourth proportional to 80,028,205.80, 112,341,819 and 80,028,205.80 is: 112,341,819

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,028,205.80 : 112,341,819 = 80,028,205.80 : x
  2. Step 2: Convert to fraction form
    80,028,205.80/112,341,819 = 80,028,205.80/x
  3. Step 3: Cross multiply
    80,028,205.80x = 112,341,819 × 80,028,205.80
  4. Step 4: Simplify right side
    80,028,205.80x = 8,990,514,210,878,350
  5. Step 5: Solve for x
    x = 8,990,514,210,878,350/80,028,205.80
  6. Step 6: Final answer
    x = 112,341,819

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.