Home / 78,943.29-118,332.24-36,788.61

Finding the Fourth Proportional to 78,943.29, 118,332.24 and 36,788.61

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Solution

The fourth proportional to 78,943.29, 118,332.24 and 36,788.61 is: 55,144.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,943.29 : 118,332.24 = 36,788.61 : x
  2. Step 2: Convert to fraction form
    78,943.29/118,332.24 = 36,788.61/x
  3. Step 3: Cross multiply
    78,943.29x = 118,332.24 × 36,788.61
  4. Step 4: Simplify right side
    78,943.29x = 4,353,278,627.79
  5. Step 5: Solve for x
    x = 4,353,278,627.79/78,943.29
  6. Step 6: Final answer
    x = 55,144.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.