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Finding the Fourth Proportional to 79,266,285.60, 118,899,428.40 and 25,419,040.80

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Solution

The fourth proportional to 79,266,285.60, 118,899,428.40 and 25,419,040.80 is: 38,128,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,266,285.60 : 118,899,428.40 = 25,419,040.80 : x
  2. Step 2: Convert to fraction form
    79,266,285.60/118,899,428.40 = 25,419,040.80/x
  3. Step 3: Cross multiply
    79,266,285.60x = 118,899,428.40 × 25,419,040.80
  4. Step 4: Simplify right side
    79,266,285.60x = 3,022,309,421,596,279
  5. Step 5: Solve for x
    x = 3,022,309,421,596,279/79,266,285.60
  6. Step 6: Final answer
    x = 38,128,561.20

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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.