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Finding the Fourth Proportional to 98,983.34, 136,564.88 and 55,958.68

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Solution

The fourth proportional to 98,983.34, 136,564.88 and 55,958.68 is: 77,204.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,983.34 : 136,564.88 = 55,958.68 : x
  2. Step 2: Convert to fraction form
    98,983.34/136,564.88 = 55,958.68/x
  3. Step 3: Cross multiply
    98,983.34x = 136,564.88 × 55,958.68
  4. Step 4: Simplify right side
    98,983.34x = 7,641,990,419.16
  5. Step 5: Solve for x
    x = 7,641,990,419.16/98,983.34
  6. Step 6: Final answer
    x = 77,204.81

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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.