Home / 66,784,139.73-100,171,310.72-21,333,730.77

Finding the Fourth Proportional to 66,784,139.73, 100,171,310.72 and 21,333,730.77

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Solution

The fourth proportional to 66,784,139.73, 100,171,310.72 and 21,333,730.77 is: 31,999,031.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,784,139.73 : 100,171,310.72 = 21,333,730.77 : x
  2. Step 2: Convert to fraction form
    66,784,139.73/100,171,310.72 = 21,333,730.77/x
  3. Step 3: Cross multiply
    66,784,139.73x = 100,171,310.72 × 21,333,730.77
  4. Step 4: Simplify right side
    66,784,139.73x = 2,137,027,773,671,826.25
  5. Step 5: Solve for x
    x = 2,137,027,773,671,826.25/66,784,139.73
  6. Step 6: Final answer
    x = 31,999,031.24

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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.