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Finding the Fourth Proportional to 88,089.36, 132,121.80 and 28,918.32

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Solution

The fourth proportional to 88,089.36, 132,121.80 and 28,918.32 is: 43,373.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,089.36 : 132,121.80 = 28,918.32 : x
  2. Step 2: Convert to fraction form
    88,089.36/132,121.80 = 28,918.32/x
  3. Step 3: Cross multiply
    88,089.36x = 132,121.80 × 28,918.32
  4. Step 4: Simplify right side
    88,089.36x = 3,820,740,491.38
  5. Step 5: Solve for x
    x = 3,820,740,491.38/88,089.36
  6. Step 6: Final answer
    x = 43,373.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.