Home / 72,170,998.80-108,256,498.20-53,039,122.80

Finding the Fourth Proportional to 72,170,998.80, 108,256,498.20 and 53,039,122.80

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Solution

The fourth proportional to 72,170,998.80, 108,256,498.20 and 53,039,122.80 is: 79,558,684.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,170,998.80 : 108,256,498.20 = 53,039,122.80 : x
  2. Step 2: Convert to fraction form
    72,170,998.80/108,256,498.20 = 53,039,122.80/x
  3. Step 3: Cross multiply
    72,170,998.80x = 108,256,498.20 × 53,039,122.80
  4. Step 4: Simplify right side
    72,170,998.80x = 5,741,829,701,927,779
  5. Step 5: Solve for x
    x = 5,741,829,701,927,779/72,170,998.80
  6. Step 6: Final answer
    x = 79,558,684.20

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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.