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Finding the Fourth Proportional to 97,572.36, 134,648.11 and 55,129.98

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Solution

The fourth proportional to 97,572.36, 134,648.11 and 55,129.98 is: 76,078.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,572.36 : 134,648.11 = 55,129.98 : x
  2. Step 2: Convert to fraction form
    97,572.36/134,648.11 = 55,129.98/x
  3. Step 3: Cross multiply
    97,572.36x = 134,648.11 × 55,129.98
  4. Step 4: Simplify right side
    97,572.36x = 7,423,147,335.69
  5. Step 5: Solve for x
    x = 7,423,147,335.69/97,572.36
  6. Step 6: Final answer
    x = 76,078.38

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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.