Home / 79,509,817.20-119,264,725.80-71,857,066.80

Finding the Fourth Proportional to 79,509,817.20, 119,264,725.80 and 71,857,066.80

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Solution

The fourth proportional to 79,509,817.20, 119,264,725.80 and 71,857,066.80 is: 107,785,600.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,509,817.20 : 119,264,725.80 = 71,857,066.80 : x
  2. Step 2: Convert to fraction form
    79,509,817.20/119,264,725.80 = 71,857,066.80/x
  3. Step 3: Cross multiply
    79,509,817.20x = 119,264,725.80 × 71,857,066.80
  4. Step 4: Simplify right side
    79,509,817.20x = 8,570,013,368,694,283
  5. Step 5: Solve for x
    x = 8,570,013,368,694,283/79,509,817.20
  6. Step 6: Final answer
    x = 107,785,600.20

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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.