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Finding the Fourth Proportional to 74,610.93, 102,959.89 and 40,618.69

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Solution

The fourth proportional to 74,610.93, 102,959.89 and 40,618.69 is: 56,052.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,610.93 : 102,959.89 = 40,618.69 : x
  2. Step 2: Convert to fraction form
    74,610.93/102,959.89 = 40,618.69/x
  3. Step 3: Cross multiply
    74,610.93x = 102,959.89 × 40,618.69
  4. Step 4: Simplify right side
    74,610.93x = 4,182,095,854.34
  5. Step 5: Solve for x
    x = 4,182,095,854.34/74,610.93
  6. Step 6: Final answer
    x = 56,052.05

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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.