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Finding the Fourth Proportional to 187,980.64, 281,987.52 and 53,045.89

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Solution

The fourth proportional to 187,980.64, 281,987.52 and 53,045.89 is: 79,573.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,980.64 : 281,987.52 = 53,045.89 : x
  2. Step 2: Convert to fraction form
    187,980.64/281,987.52 = 53,045.89/x
  3. Step 3: Cross multiply
    187,980.64x = 281,987.52 × 53,045.89
  4. Step 4: Simplify right side
    187,980.64x = 14,958,278,967.29
  5. Step 5: Solve for x
    x = 14,958,278,967.29/187,980.64
  6. Step 6: Final answer
    x = 79,573.51

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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.