Home / 88,005.17-121,402.41-55,685.31

Finding the Fourth Proportional to 88,005.17, 121,402.41 and 55,685.31

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Solution

The fourth proportional to 88,005.17, 121,402.41 and 55,685.31 is: 76,817.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,005.17 : 121,402.41 = 55,685.31 : x
  2. Step 2: Convert to fraction form
    88,005.17/121,402.41 = 55,685.31/x
  3. Step 3: Cross multiply
    88,005.17x = 121,402.41 × 55,685.31
  4. Step 4: Simplify right side
    88,005.17x = 6,760,330,835.60
  5. Step 5: Solve for x
    x = 6,760,330,835.60/88,005.17
  6. Step 6: Final answer
    x = 76,817.43

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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.