Home / 78,365,711.40-117,517,808.70-29,817,781.80

Finding the Fourth Proportional to 78,365,711.40, 117,517,808.70 and 29,817,781.80

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Solution

The fourth proportional to 78,365,711.40, 117,517,808.70 and 29,817,781.80 is: 44,714,969.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,365,711.40 : 117,517,808.70 = 29,817,781.80 : x
  2. Step 2: Convert to fraction form
    78,365,711.40/117,517,808.70 = 29,817,781.80/x
  3. Step 3: Cross multiply
    78,365,711.40x = 117,517,808.70 × 29,817,781.80
  4. Step 4: Simplify right side
    78,365,711.40x = 3,504,120,377,430,742
  5. Step 5: Solve for x
    x = 3,504,120,377,430,742/78,365,711.40
  6. Step 6: Final answer
    x = 44,714,969.27

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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.