Home / 51,021.18-70,407.80-28,359.58

Finding the Fourth Proportional to 51,021.18, 70,407.80 and 28,359.58

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Solution

The fourth proportional to 51,021.18, 70,407.80 and 28,359.58 is: 39,135.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,021.18 : 70,407.80 = 28,359.58 : x
  2. Step 2: Convert to fraction form
    51,021.18/70,407.80 = 28,359.58/x
  3. Step 3: Cross multiply
    51,021.18x = 70,407.80 × 28,359.58
  4. Step 4: Simplify right side
    51,021.18x = 1,996,735,636.72
  5. Step 5: Solve for x
    x = 1,996,735,636.72/51,021.18
  6. Step 6: Final answer
    x = 39,135.43

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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.