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Finding the Fourth Proportional to 55,551.60, 83,269.08 and 39,960.72

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Solution

The fourth proportional to 55,551.60, 83,269.08 and 39,960.72 is: 59,899.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,551.60 : 83,269.08 = 39,960.72 : x
  2. Step 2: Convert to fraction form
    55,551.60/83,269.08 = 39,960.72/x
  3. Step 3: Cross multiply
    55,551.60x = 83,269.08 × 39,960.72
  4. Step 4: Simplify right side
    55,551.60x = 3,327,492,390.54
  5. Step 5: Solve for x
    x = 3,327,492,390.54/55,551.60
  6. Step 6: Final answer
    x = 59,899.13

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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.