Home / 67,946.88-101,916.72-21,194.40

Finding the Fourth Proportional to 67,946.88, 101,916.72 and 21,194.40

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Solution

The fourth proportional to 67,946.88, 101,916.72 and 21,194.40 is: 31,790.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,946.88 : 101,916.72 = 21,194.40 : x
  2. Step 2: Convert to fraction form
    67,946.88/101,916.72 = 21,194.40/x
  3. Step 3: Cross multiply
    67,946.88x = 101,916.72 × 21,194.40
  4. Step 4: Simplify right side
    67,946.88x = 2,160,063,730.37
  5. Step 5: Solve for x
    x = 2,160,063,730.37/67,946.88
  6. Step 6: Final answer
    x = 31,790.48

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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.