Home / 40,916.80-56,423.20-28,976.96

Finding the Fourth Proportional to 40,916.80, 56,423.20 and 28,976.96

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Solution

The fourth proportional to 40,916.80, 56,423.20 and 28,976.96 is: 39,958.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,916.80 : 56,423.20 = 28,976.96 : x
  2. Step 2: Convert to fraction form
    40,916.80/56,423.20 = 28,976.96/x
  3. Step 3: Cross multiply
    40,916.80x = 56,423.20 × 28,976.96
  4. Step 4: Simplify right side
    40,916.80x = 1,634,972,809.47
  5. Step 5: Solve for x
    x = 1,634,972,809.47/40,916.80
  6. Step 6: Final answer
    x = 39,958.47

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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.