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Finding the Fourth Proportional to 187,572.72, 281,386.80 and 54,435.72

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Solution

The fourth proportional to 187,572.72, 281,386.80 and 54,435.72 is: 81,661.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,572.72 : 281,386.80 = 54,435.72 : x
  2. Step 2: Convert to fraction form
    187,572.72/281,386.80 = 54,435.72/x
  3. Step 3: Cross multiply
    187,572.72x = 281,386.80 × 54,435.72
  4. Step 4: Simplify right side
    187,572.72x = 15,317,493,056.50
  5. Step 5: Solve for x
    x = 15,317,493,056.50/187,572.72
  6. Step 6: Final answer
    x = 81,661.62

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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.