Home / 51,021.92-70,411.20-28,362.80

Finding the Fourth Proportional to 51,021.92, 70,411.20 and 28,362.80

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Solution

The fourth proportional to 51,021.92, 70,411.20 and 28,362.80 is: 39,141.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,021.92 : 70,411.20 = 28,362.80 : x
  2. Step 2: Convert to fraction form
    51,021.92/70,411.20 = 28,362.80/x
  3. Step 3: Cross multiply
    51,021.92x = 70,411.20 × 28,362.80
  4. Step 4: Simplify right side
    51,021.92x = 1,997,058,783.36
  5. Step 5: Solve for x
    x = 1,997,058,783.36/51,021.92
  6. Step 6: Final answer
    x = 39,141.19

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1.5x scale

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.