Home / 74,505.30-102,818.10-40,513.86

Finding the Fourth Proportional to 74,505.30, 102,818.10 and 40,513.86

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Solution

The fourth proportional to 74,505.30, 102,818.10 and 40,513.86 is: 55,909.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,505.30 : 102,818.10 = 40,513.86 : x
  2. Step 2: Convert to fraction form
    74,505.30/102,818.10 = 40,513.86/x
  3. Step 3: Cross multiply
    74,505.30x = 102,818.10 × 40,513.86
  4. Step 4: Simplify right side
    74,505.30x = 4,165,558,108.87
  5. Step 5: Solve for x
    x = 4,165,558,108.87/74,505.30
  6. Step 6: Final answer
    x = 55,909.55

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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.