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Finding the Fourth Proportional to 68,381.84, 102,495 and 28,914.32

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Solution

The fourth proportional to 68,381.84, 102,495 and 28,914.32 is: 43,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,381.84 : 102,495 = 28,914.32 : x
  2. Step 2: Convert to fraction form
    68,381.84/102,495 = 28,914.32/x
  3. Step 3: Cross multiply
    68,381.84x = 102,495 × 28,914.32
  4. Step 4: Simplify right side
    68,381.84x = 2,963,573,228.40
  5. Step 5: Solve for x
    x = 2,963,573,228.40/68,381.84
  6. Step 6: Final answer
    x = 43,338.60

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1.5x scale

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.