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Finding the Fourth Proportional to 67,212.36, 92,754.32 and 38,934.40

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Solution

The fourth proportional to 67,212.36, 92,754.32 and 38,934.40 is: 53,730.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,212.36 : 92,754.32 = 38,934.40 : x
  2. Step 2: Convert to fraction form
    67,212.36/92,754.32 = 38,934.40/x
  3. Step 3: Cross multiply
    67,212.36x = 92,754.32 × 38,934.40
  4. Step 4: Simplify right side
    67,212.36x = 3,611,333,796.61
  5. Step 5: Solve for x
    x = 3,611,333,796.61/67,212.36
  6. Step 6: Final answer
    x = 53,730.20

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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.