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Finding the Fourth Proportional to 67,820.88, 93,604.32 and 39,540.36

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Solution

The fourth proportional to 67,820.88, 93,604.32 and 39,540.36 is: 54,572.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,820.88 : 93,604.32 = 39,540.36 : x
  2. Step 2: Convert to fraction form
    67,820.88/93,604.32 = 39,540.36/x
  3. Step 3: Cross multiply
    67,820.88x = 93,604.32 × 39,540.36
  4. Step 4: Simplify right side
    67,820.88x = 3,701,148,510.36
  5. Step 5: Solve for x
    x = 3,701,148,510.36/67,820.88
  6. Step 6: Final answer
    x = 54,572.40

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1.5x scale

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.