Home / 28,447,999.80-42,671,999.70-7,172,863.80

Finding the Fourth Proportional to 28,447,999.80, 42,671,999.70 and 7,172,863.80

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Solution

The fourth proportional to 28,447,999.80, 42,671,999.70 and 7,172,863.80 is: 10,759,295.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447,999.80 : 42,671,999.70 = 7,172,863.80 : x
  2. Step 2: Convert to fraction form
    28,447,999.80/42,671,999.70 = 7,172,863.80/x
  3. Step 3: Cross multiply
    28,447,999.80x = 42,671,999.70 × 7,172,863.80
  4. Step 4: Simplify right side
    28,447,999.80x = 306,080,441,921,740.88
  5. Step 5: Solve for x
    x = 306,080,441,921,740.88/28,447,999.80
  6. Step 6: Final answer
    x = 10,759,295.70

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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.