Home / 75,133.86-103,684.90-40,678.96

Finding the Fourth Proportional to 75,133.86, 103,684.90 and 40,678.96

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Solution

The fourth proportional to 75,133.86, 103,684.90 and 40,678.96 is: 56,137.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,133.86 : 103,684.90 = 40,678.96 : x
  2. Step 2: Convert to fraction form
    75,133.86/103,684.90 = 40,678.96/x
  3. Step 3: Cross multiply
    75,133.86x = 103,684.90 × 40,678.96
  4. Step 4: Simplify right side
    75,133.86x = 4,217,793,899.70
  5. Step 5: Solve for x
    x = 4,217,793,899.70/75,133.86
  6. Step 6: Final answer
    x = 56,137.06

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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.