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Finding the Fourth Proportional to 28,978,053.40, 43,467,080.10 and 28,600,139.80

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Solution

The fourth proportional to 28,978,053.40, 43,467,080.10 and 28,600,139.80 is: 42,900,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,053.40 : 43,467,080.10 = 28,600,139.80 : x
  2. Step 2: Convert to fraction form
    28,978,053.40/43,467,080.10 = 28,600,139.80/x
  3. Step 3: Cross multiply
    28,978,053.40x = 43,467,080.10 × 28,600,139.80
  4. Step 4: Simplify right side
    28,978,053.40x = 1,243,164,567,557,798
  5. Step 5: Solve for x
    x = 1,243,164,567,557,798/28,978,053.40
  6. Step 6: Final answer
    x = 42,900,209.70

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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.