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Finding the Fourth Proportional to 74,637, 102,999.78 and 41,103.72

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Solution

The fourth proportional to 74,637, 102,999.78 and 41,103.72 is: 56,723.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,637 : 102,999.78 = 41,103.72 : x
  2. Step 2: Convert to fraction form
    74,637/102,999.78 = 41,103.72/x
  3. Step 3: Cross multiply
    74,637x = 102,999.78 × 41,103.72
  4. Step 4: Simplify right side
    74,637x = 4,233,674,117.18
  5. Step 5: Solve for x
    x = 4,233,674,117.18/74,637
  6. Step 6: Final answer
    x = 56,723.53

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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.