Home / 85,934,891.88-128,901,074.81-21,238,702.52

Finding the Fourth Proportional to 85,934,891.88, 128,901,074.81 and 21,238,702.52

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Solution

The fourth proportional to 85,934,891.88, 128,901,074.81 and 21,238,702.52 is: 31,857,741.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,934,891.88 : 128,901,074.81 = 21,238,702.52 : x
  2. Step 2: Convert to fraction form
    85,934,891.88/128,901,074.81 = 21,238,702.52/x
  3. Step 3: Cross multiply
    85,934,891.88x = 128,901,074.81 × 21,238,702.52
  4. Step 4: Simplify right side
    85,934,891.88x = 2,737,691,581,647,157
  5. Step 5: Solve for x
    x = 2,737,691,581,647,157/85,934,891.88
  6. Step 6: Final answer
    x = 31,857,741.62

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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.