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Finding the Fourth Proportional to 98,844.97, 136,415.83 and 56,409.88

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Solution

The fourth proportional to 98,844.97, 136,415.83 and 56,409.88 is: 77,851.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,844.97 : 136,415.83 = 56,409.88 : x
  2. Step 2: Convert to fraction form
    98,844.97/136,415.83 = 56,409.88/x
  3. Step 3: Cross multiply
    98,844.97x = 136,415.83 × 56,409.88
  4. Step 4: Simplify right side
    98,844.97x = 7,695,200,600.40
  5. Step 5: Solve for x
    x = 7,695,200,600.40/98,844.97
  6. Step 6: Final answer
    x = 77,851.21

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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.