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Finding the Fourth Proportional to 66,492.63, 91,793.70 and 51,351.30

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Solution

The fourth proportional to 66,492.63, 91,793.70 and 51,351.30 is: 70,890.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,492.63 : 91,793.70 = 51,351.30 : x
  2. Step 2: Convert to fraction form
    66,492.63/91,793.70 = 51,351.30/x
  3. Step 3: Cross multiply
    66,492.63x = 91,793.70 × 51,351.30
  4. Step 4: Simplify right side
    66,492.63x = 4,713,725,826.81
  5. Step 5: Solve for x
    x = 4,713,725,826.81/66,492.63
  6. Step 6: Final answer
    x = 70,890.95

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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.