Home / 78,933.04-108,930.30-43,125.78

Finding the Fourth Proportional to 78,933.04, 108,930.30 and 43,125.78

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Solution

The fourth proportional to 78,933.04, 108,930.30 and 43,125.78 is: 59,515.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,933.04 : 108,930.30 = 43,125.78 : x
  2. Step 2: Convert to fraction form
    78,933.04/108,930.30 = 43,125.78/x
  3. Step 3: Cross multiply
    78,933.04x = 108,930.30 × 43,125.78
  4. Step 4: Simplify right side
    78,933.04x = 4,697,704,153.13
  5. Step 5: Solve for x
    x = 4,697,704,153.13/78,933.04
  6. Step 6: Final answer
    x = 59,515.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.