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Finding the Fourth Proportional to 68,378.64, 94,274.81 and 56,068.69

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Solution

The fourth proportional to 68,378.64, 94,274.81 and 56,068.69 is: 77,302.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,378.64 : 94,274.81 = 56,068.69 : x
  2. Step 2: Convert to fraction form
    68,378.64/94,274.81 = 56,068.69/x
  3. Step 3: Cross multiply
    68,378.64x = 94,274.81 × 56,068.69
  4. Step 4: Simplify right side
    68,378.64x = 5,285,865,426.35
  5. Step 5: Solve for x
    x = 5,285,865,426.35/68,378.64
  6. Step 6: Final answer
    x = 77,302.87

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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.