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Finding the Fourth Proportional to 88,938.40, 133,083.60 and 55,674.40

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Solution

The fourth proportional to 88,938.40, 133,083.60 and 55,674.40 is: 83,308.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,938.40 : 133,083.60 = 55,674.40 : x
  2. Step 2: Convert to fraction form
    88,938.40/133,083.60 = 55,674.40/x
  3. Step 3: Cross multiply
    88,938.40x = 133,083.60 × 55,674.40
  4. Step 4: Simplify right side
    88,938.40x = 7,409,349,579.84
  5. Step 5: Solve for x
    x = 7,409,349,579.84/88,938.40
  6. Step 6: Final answer
    x = 83,308.78

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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.