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Finding the Fourth Proportional to 74,354.88, 102,606.95 and 40,362.62

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Solution

The fourth proportional to 74,354.88, 102,606.95 and 40,362.62 is: 55,698.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,354.88 : 102,606.95 = 40,362.62 : x
  2. Step 2: Convert to fraction form
    74,354.88/102,606.95 = 40,362.62/x
  3. Step 3: Cross multiply
    74,354.88x = 102,606.95 × 40,362.62
  4. Step 4: Simplify right side
    74,354.88x = 4,141,484,617.36
  5. Step 5: Solve for x
    x = 4,141,484,617.36/74,354.88
  6. Step 6: Final answer
    x = 55,698.89

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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.