Home / 51,485.04-77,228.34-20,320

Finding the Fourth Proportional to 51,485.04, 77,228.34 and 20,320

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Solution

The fourth proportional to 51,485.04, 77,228.34 and 20,320 is: 30,480.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,485.04 : 77,228.34 = 20,320 : x
  2. Step 2: Convert to fraction form
    51,485.04/77,228.34 = 20,320/x
  3. Step 3: Cross multiply
    51,485.04x = 77,228.34 × 20,320
  4. Step 4: Simplify right side
    51,485.04x = 1,569,279,868.80
  5. Step 5: Solve for x
    x = 1,569,279,868.80/51,485.04
  6. Step 6: Final answer
    x = 30,480.31

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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.