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Finding the Fourth Proportional to 98,754.75, 136,281.83 and 54,042.75

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Solution

The fourth proportional to 98,754.75, 136,281.83 and 54,042.75 is: 74,579.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,754.75 : 136,281.83 = 54,042.75 : x
  2. Step 2: Convert to fraction form
    98,754.75/136,281.83 = 54,042.75/x
  3. Step 3: Cross multiply
    98,754.75x = 136,281.83 × 54,042.75
  4. Step 4: Simplify right side
    98,754.75x = 7,365,044,598.02
  5. Step 5: Solve for x
    x = 7,365,044,598.02/98,754.75
  6. Step 6: Final answer
    x = 74,579.14

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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.