Home / 51,478.34-71,043.36-28,815.89

Finding the Fourth Proportional to 51,478.34, 71,043.36 and 28,815.89

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Solution

The fourth proportional to 51,478.34, 71,043.36 and 28,815.89 is: 39,767.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,478.34 : 71,043.36 = 28,815.89 : x
  2. Step 2: Convert to fraction form
    51,478.34/71,043.36 = 28,815.89/x
  3. Step 3: Cross multiply
    51,478.34x = 71,043.36 × 28,815.89
  4. Step 4: Simplify right side
    51,478.34x = 2,047,177,646.99
  5. Step 5: Solve for x
    x = 2,047,177,646.99/51,478.34
  6. Step 6: Final answer
    x = 39,767.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.