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Finding the Fourth Proportional to 88,935.80, 133,075.65 and 81,062.60

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Solution

The fourth proportional to 88,935.80, 133,075.65 and 81,062.60 is: 121,294.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,935.80 : 133,075.65 = 81,062.60 : x
  2. Step 2: Convert to fraction form
    88,935.80/133,075.65 = 81,062.60/x
  3. Step 3: Cross multiply
    88,935.80x = 133,075.65 × 81,062.60
  4. Step 4: Simplify right side
    88,935.80x = 10,787,458,185.69
  5. Step 5: Solve for x
    x = 10,787,458,185.69/88,935.80
  6. Step 6: Final answer
    x = 121,294.89

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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.