Home / 84,582.80-126,782.64-55,021.76

Finding the Fourth Proportional to 84,582.80, 126,782.64 and 55,021.76

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Solution

The fourth proportional to 84,582.80, 126,782.64 and 55,021.76 is: 82,473.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,582.80 : 126,782.64 = 55,021.76 : x
  2. Step 2: Convert to fraction form
    84,582.80/126,782.64 = 55,021.76/x
  3. Step 3: Cross multiply
    84,582.80x = 126,782.64 × 55,021.76
  4. Step 4: Simplify right side
    84,582.80x = 6,975,803,990.25
  5. Step 5: Solve for x
    x = 6,975,803,990.25/84,582.80
  6. Step 6: Final answer
    x = 82,473.08

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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.