Home / 74,864.43-103,311.21-40,871.61

Finding the Fourth Proportional to 74,864.43, 103,311.21 and 40,871.61

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Solution

The fourth proportional to 74,864.43, 103,311.21 and 40,871.61 is: 56,401.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,864.43 : 103,311.21 = 40,871.61 : x
  2. Step 2: Convert to fraction form
    74,864.43/103,311.21 = 40,871.61/x
  3. Step 3: Cross multiply
    74,864.43x = 103,311.21 × 40,871.61
  4. Step 4: Simplify right side
    74,864.43x = 4,222,495,483.75
  5. Step 5: Solve for x
    x = 4,222,495,483.75/74,864.43
  6. Step 6: Final answer
    x = 56,401.89

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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.