Home / 78,889,249.41-118,333,874.40-21,381,520.65

Finding the Fourth Proportional to 78,889,249.41, 118,333,874.40 and 21,381,520.65

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Solution

The fourth proportional to 78,889,249.41, 118,333,874.40 and 21,381,520.65 is: 32,072,281.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,249.41 : 118,333,874.40 = 21,381,520.65 : x
  2. Step 2: Convert to fraction form
    78,889,249.41/118,333,874.40 = 21,381,520.65/x
  3. Step 3: Cross multiply
    78,889,249.41x = 118,333,874.40 × 21,381,520.65
  4. Step 4: Simplify right side
    78,889,249.41x = 2,530,158,179,078,106.50
  5. Step 5: Solve for x
    x = 2,530,158,179,078,106.50/78,889,249.41
  6. Step 6: Final answer
    x = 32,072,281.05

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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.