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Finding the Fourth Proportional to 88,692.70, 133,039.05 and 86,943.10

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Solution

The fourth proportional to 88,692.70, 133,039.05 and 86,943.10 is: 130,414.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,692.70 : 133,039.05 = 86,943.10 : x
  2. Step 2: Convert to fraction form
    88,692.70/133,039.05 = 86,943.10/x
  3. Step 3: Cross multiply
    88,692.70x = 133,039.05 × 86,943.10
  4. Step 4: Simplify right side
    88,692.70x = 11,566,827,428.06
  5. Step 5: Solve for x
    x = 11,566,827,428.06/88,692.70
  6. Step 6: Final answer
    x = 130,414.65

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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.