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Finding the Fourth Proportional to 98,517.77, 135,955.97 and 57,672.51

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Solution

The fourth proportional to 98,517.77, 135,955.97 and 57,672.51 is: 79,588.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,517.77 : 135,955.97 = 57,672.51 : x
  2. Step 2: Convert to fraction form
    98,517.77/135,955.97 = 57,672.51/x
  3. Step 3: Cross multiply
    98,517.77x = 135,955.97 × 57,672.51
  4. Step 4: Simplify right side
    98,517.77x = 7,840,921,457.46
  5. Step 5: Solve for x
    x = 7,840,921,457.46/98,517.77
  6. Step 6: Final answer
    x = 79,588.91

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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.