Home / 84,384.09-126,572.76-21,204.72

Finding the Fourth Proportional to 84,384.09, 126,572.76 and 21,204.72

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Solution

The fourth proportional to 84,384.09, 126,572.76 and 21,204.72 is: 31,806.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,384.09 : 126,572.76 = 21,204.72 : x
  2. Step 2: Convert to fraction form
    84,384.09/126,572.76 = 21,204.72/x
  3. Step 3: Cross multiply
    84,384.09x = 126,572.76 × 21,204.72
  4. Step 4: Simplify right side
    84,384.09x = 2,683,939,935.43
  5. Step 5: Solve for x
    x = 2,683,939,935.43/84,384.09
  6. Step 6: Final answer
    x = 31,806.23

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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.