Home / 31,378,298.04-43,289,599.50-18,145,029.72

Finding the Fourth Proportional to 31,378,298.04, 43,289,599.50 and 18,145,029.72

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Solution

The fourth proportional to 31,378,298.04, 43,289,599.50 and 18,145,029.72 is: 25,032,940.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,378,298.04 : 43,289,599.50 = 18,145,029.72 : x
  2. Step 2: Convert to fraction form
    31,378,298.04/43,289,599.50 = 18,145,029.72/x
  3. Step 3: Cross multiply
    31,378,298.04x = 43,289,599.50 × 18,145,029.72
  4. Step 4: Simplify right side
    31,378,298.04x = 785,491,069,494,397.12
  5. Step 5: Solve for x
    x = 785,491,069,494,397.12/31,378,298.04
  6. Step 6: Final answer
    x = 25,032,940.55

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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.