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Finding the Fourth Proportional to 74,029.98, 102,161.67 and 40,038.46

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Solution

The fourth proportional to 74,029.98, 102,161.67 and 40,038.46 is: 55,253.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,029.98 : 102,161.67 = 40,038.46 : x
  2. Step 2: Convert to fraction form
    74,029.98/102,161.67 = 40,038.46/x
  3. Step 3: Cross multiply
    74,029.98x = 102,161.67 × 40,038.46
  4. Step 4: Simplify right side
    74,029.98x = 4,090,395,937.83
  5. Step 5: Solve for x
    x = 4,090,395,937.83/74,029.98
  6. Step 6: Final answer
    x = 55,253.24

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