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Finding the Fourth Proportional to 74,253.36, 102,465.36 and 40,719.36

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Solution

The fourth proportional to 74,253.36, 102,465.36 and 40,719.36 is: 56,190.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,253.36 : 102,465.36 = 40,719.36 : x
  2. Step 2: Convert to fraction form
    74,253.36/102,465.36 = 40,719.36/x
  3. Step 3: Cross multiply
    74,253.36x = 102,465.36 × 40,719.36
  4. Step 4: Simplify right side
    74,253.36x = 4,172,323,881.37
  5. Step 5: Solve for x
    x = 4,172,323,881.37/74,253.36
  6. Step 6: Final answer
    x = 56,190.37

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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.