Home / 52,661.20-78,838.20-47,131.60

Finding the Fourth Proportional to 52,661.20, 78,838.20 and 47,131.60

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Solution

The fourth proportional to 52,661.20, 78,838.20 and 47,131.60 is: 70,559.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,661.20 : 78,838.20 = 47,131.60 : x
  2. Step 2: Convert to fraction form
    52,661.20/78,838.20 = 47,131.60/x
  3. Step 3: Cross multiply
    52,661.20x = 78,838.20 × 47,131.60
  4. Step 4: Simplify right side
    52,661.20x = 3,715,770,507.12
  5. Step 5: Solve for x
    x = 3,715,770,507.12/52,661.20
  6. Step 6: Final answer
    x = 70,559.93

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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.