Home / 78,977.84-118,400.10-36,835.71

Finding the Fourth Proportional to 78,977.84, 118,400.10 and 36,835.71

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Solution

The fourth proportional to 78,977.84, 118,400.10 and 36,835.71 is: 55,222.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,977.84 : 118,400.10 = 36,835.71 : x
  2. Step 2: Convert to fraction form
    78,977.84/118,400.10 = 36,835.71/x
  3. Step 3: Cross multiply
    78,977.84x = 118,400.10 × 36,835.71
  4. Step 4: Simplify right side
    78,977.84x = 4,361,351,747.57
  5. Step 5: Solve for x
    x = 4,361,351,747.57/78,977.84
  6. Step 6: Final answer
    x = 55,222.48

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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.