Home / 53,818.20-80,727.30-42,141.40

Finding the Fourth Proportional to 53,818.20, 80,727.30 and 42,141.40

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Solution

The fourth proportional to 53,818.20, 80,727.30 and 42,141.40 is: 63,212.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,818.20 : 80,727.30 = 42,141.40 : x
  2. Step 2: Convert to fraction form
    53,818.20/80,727.30 = 42,141.40/x
  3. Step 3: Cross multiply
    53,818.20x = 80,727.30 × 42,141.40
  4. Step 4: Simplify right side
    53,818.20x = 3,401,961,440.22
  5. Step 5: Solve for x
    x = 3,401,961,440.22/53,818.20
  6. Step 6: Final answer
    x = 63,212.10

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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.