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Finding the Fourth Proportional to 73,972, 102,083.88 and 40,440.16

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Solution

The fourth proportional to 73,972, 102,083.88 and 40,440.16 is: 55,808.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,972 : 102,083.88 = 40,440.16 : x
  2. Step 2: Convert to fraction form
    73,972/102,083.88 = 40,440.16/x
  3. Step 3: Cross multiply
    73,972x = 102,083.88 × 40,440.16
  4. Step 4: Simplify right side
    73,972x = 4,128,288,440.62
  5. Step 5: Solve for x
    x = 4,128,288,440.62/73,972
  6. Step 6: Final answer
    x = 55,808.80

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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.