Home / 84,515.76-126,777.28-31,929.36

Finding the Fourth Proportional to 84,515.76, 126,777.28 and 31,929.36

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Solution

The fourth proportional to 84,515.76, 126,777.28 and 31,929.36 is: 47,895.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,515.76 : 126,777.28 = 31,929.36 : x
  2. Step 2: Convert to fraction form
    84,515.76/126,777.28 = 31,929.36/x
  3. Step 3: Cross multiply
    84,515.76x = 126,777.28 × 31,929.36
  4. Step 4: Simplify right side
    84,515.76x = 4,047,917,412.94
  5. Step 5: Solve for x
    x = 4,047,917,412.94/84,515.76
  6. Step 6: Final answer
    x = 47,895.42

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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.