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Finding the Fourth Proportional to 99,040.74, 136,674.99 and 53,718

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Solution

The fourth proportional to 99,040.74, 136,674.99 and 53,718 is: 74,130.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,040.74 : 136,674.99 = 53,718 : x
  2. Step 2: Convert to fraction form
    99,040.74/136,674.99 = 53,718/x
  3. Step 3: Cross multiply
    99,040.74x = 136,674.99 × 53,718
  4. Step 4: Simplify right side
    99,040.74x = 7,341,907,112.82
  5. Step 5: Solve for x
    x = 7,341,907,112.82/99,040.74
  6. Step 6: Final answer
    x = 74,130.17

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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.