Home / 51,815.03-71,520.80-39,864.29

Finding the Fourth Proportional to 51,815.03, 71,520.80 and 39,864.29

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Solution

The fourth proportional to 51,815.03, 71,520.80 and 39,864.29 is: 55,025.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,815.03 : 71,520.80 = 39,864.29 : x
  2. Step 2: Convert to fraction form
    51,815.03/71,520.80 = 39,864.29/x
  3. Step 3: Cross multiply
    51,815.03x = 71,520.80 × 39,864.29
  4. Step 4: Simplify right side
    51,815.03x = 2,851,125,355.31
  5. Step 5: Solve for x
    x = 2,851,125,355.31/51,815.03
  6. Step 6: Final answer
    x = 55,025.07

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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.