Home / 51,123.20-76,684.80-47,436.80

Finding the Fourth Proportional to 51,123.20, 76,684.80 and 47,436.80

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Solution

The fourth proportional to 51,123.20, 76,684.80 and 47,436.80 is: 71,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,123.20 : 76,684.80 = 47,436.80 : x
  2. Step 2: Convert to fraction form
    51,123.20/76,684.80 = 47,436.80/x
  3. Step 3: Cross multiply
    51,123.20x = 76,684.80 × 47,436.80
  4. Step 4: Simplify right side
    51,123.20x = 3,637,681,520.64
  5. Step 5: Solve for x
    x = 3,637,681,520.64/51,123.20
  6. Step 6: Final answer
    x = 71,155.20

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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.