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Finding the Fourth Proportional to 66,172.86, 99,248.84 and 54,999.93

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Solution

The fourth proportional to 66,172.86, 99,248.84 and 54,999.93 is: 82,491.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,172.86 : 99,248.84 = 54,999.93 : x
  2. Step 2: Convert to fraction form
    66,172.86/99,248.84 = 54,999.93/x
  3. Step 3: Cross multiply
    66,172.86x = 99,248.84 × 54,999.93
  4. Step 4: Simplify right side
    66,172.86x = 5,458,678,977.58
  5. Step 5: Solve for x
    x = 5,458,678,977.58/66,172.86
  6. Step 6: Final answer
    x = 82,491.21

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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.