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Finding the Fourth Proportional to 65,819.80, 98,628.90 and 49,101.40

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Solution

The fourth proportional to 65,819.80, 98,628.90 and 49,101.40 is: 73,576.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,819.80 : 98,628.90 = 49,101.40 : x
  2. Step 2: Convert to fraction form
    65,819.80/98,628.90 = 49,101.40/x
  3. Step 3: Cross multiply
    65,819.80x = 98,628.90 × 49,101.40
  4. Step 4: Simplify right side
    65,819.80x = 4,842,817,070.46
  5. Step 5: Solve for x
    x = 4,842,817,070.46/65,819.80
  6. Step 6: Final answer
    x = 73,576.90

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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.