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Finding the Fourth Proportional to 74,187.90, 102,409.92 and 52,995.87

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Solution

The fourth proportional to 74,187.90, 102,409.92 and 52,995.87 is: 73,156.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,187.90 : 102,409.92 = 52,995.87 : x
  2. Step 2: Convert to fraction form
    74,187.90/102,409.92 = 52,995.87/x
  3. Step 3: Cross multiply
    74,187.90x = 102,409.92 × 52,995.87
  4. Step 4: Simplify right side
    74,187.90x = 5,427,302,807.03
  5. Step 5: Solve for x
    x = 5,427,302,807.03/74,187.90
  6. Step 6: Final answer
    x = 73,156.17

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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.