Home / 74,634.79-102,996.68-40,643.43

Finding the Fourth Proportional to 74,634.79, 102,996.68 and 40,643.43

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Solution

The fourth proportional to 74,634.79, 102,996.68 and 40,643.43 is: 56,088.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,634.79 : 102,996.68 = 40,643.43 : x
  2. Step 2: Convert to fraction form
    74,634.79/102,996.68 = 40,643.43/x
  3. Step 3: Cross multiply
    74,634.79x = 102,996.68 × 40,643.43
  4. Step 4: Simplify right side
    74,634.79x = 4,186,138,348.42
  5. Step 5: Solve for x
    x = 4,186,138,348.42/74,634.79
  6. Step 6: Final answer
    x = 56,088.30

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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.