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Finding the Fourth Proportional to 78,815.84, 118,223.76 and 52,571.84

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Solution

The fourth proportional to 78,815.84, 118,223.76 and 52,571.84 is: 78,857.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,815.84 : 118,223.76 = 52,571.84 : x
  2. Step 2: Convert to fraction form
    78,815.84/118,223.76 = 52,571.84/x
  3. Step 3: Cross multiply
    78,815.84x = 118,223.76 × 52,571.84
  4. Step 4: Simplify right side
    78,815.84x = 6,215,240,594.92
  5. Step 5: Solve for x
    x = 6,215,240,594.92/78,815.84
  6. Step 6: Final answer
    x = 78,857.76

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1.5x scale

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.