Home / 74,781.32-103,196.33-40,790.57

Finding the Fourth Proportional to 74,781.32, 103,196.33 and 40,790.57

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Solution

The fourth proportional to 74,781.32, 103,196.33 and 40,790.57 is: 56,289.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,781.32 : 103,196.33 = 40,790.57 : x
  2. Step 2: Convert to fraction form
    74,781.32/103,196.33 = 40,790.57/x
  3. Step 3: Cross multiply
    74,781.32x = 103,196.33 × 40,790.57
  4. Step 4: Simplify right side
    74,781.32x = 4,209,436,402.67
  5. Step 5: Solve for x
    x = 4,209,436,402.67/74,781.32
  6. Step 6: Final answer
    x = 56,289.95

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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.