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Finding the Fourth Proportional to 74,187.88, 102,379.27 and 40,653.88

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Solution

The fourth proportional to 74,187.88, 102,379.27 and 40,653.88 is: 56,102.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,187.88 : 102,379.27 = 40,653.88 : x
  2. Step 2: Convert to fraction form
    74,187.88/102,379.27 = 40,653.88/x
  3. Step 3: Cross multiply
    74,187.88x = 102,379.27 × 40,653.88
  4. Step 4: Simplify right side
    74,187.88x = 4,162,114,557.07
  5. Step 5: Solve for x
    x = 4,162,114,557.07/74,187.88
  6. Step 6: Final answer
    x = 56,102.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.