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Finding the Fourth Proportional to 84,564,672.60, 126,847,008.90 and 55,866,858.60

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Solution

The fourth proportional to 84,564,672.60, 126,847,008.90 and 55,866,858.60 is: 83,800,287.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,564,672.60 : 126,847,008.90 = 55,866,858.60 : x
  2. Step 2: Convert to fraction form
    84,564,672.60/126,847,008.90 = 55,866,858.60/x
  3. Step 3: Cross multiply
    84,564,672.60x = 126,847,008.90 × 55,866,858.60
  4. Step 4: Simplify right side
    84,564,672.60x = 7,086,543,910,049,242
  5. Step 5: Solve for x
    x = 7,086,543,910,049,242/84,564,672.60
  6. Step 6: Final answer
    x = 83,800,287.90

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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.