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Finding the Fourth Proportional to 66,500.40, 99,664.20 and 48,010.80

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Solution

The fourth proportional to 66,500.40, 99,664.20 and 48,010.80 is: 71,953.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,500.40 : 99,664.20 = 48,010.80 : x
  2. Step 2: Convert to fraction form
    66,500.40/99,664.20 = 48,010.80/x
  3. Step 3: Cross multiply
    66,500.40x = 99,664.20 × 48,010.80
  4. Step 4: Simplify right side
    66,500.40x = 4,784,957,973.36
  5. Step 5: Solve for x
    x = 4,784,957,973.36/66,500.40
  6. Step 6: Final answer
    x = 71,953.82

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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.