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Finding the Fourth Proportional to 68,137.50, 94,031.19 and 38,329.50

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Solution

The fourth proportional to 68,137.50, 94,031.19 and 38,329.50 is: 52,895.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,137.50 : 94,031.19 = 38,329.50 : x
  2. Step 2: Convert to fraction form
    68,137.50/94,031.19 = 38,329.50/x
  3. Step 3: Cross multiply
    68,137.50x = 94,031.19 × 38,329.50
  4. Step 4: Simplify right side
    68,137.50x = 3,604,168,497.11
  5. Step 5: Solve for x
    x = 3,604,168,497.11/68,137.50
  6. Step 6: Final answer
    x = 52,895.52

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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.