Home / 51,571.80-77,312.70-20,003.40

Finding the Fourth Proportional to 51,571.80, 77,312.70 and 20,003.40

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Solution

The fourth proportional to 51,571.80, 77,312.70 and 20,003.40 is: 29,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,571.80 : 77,312.70 = 20,003.40 : x
  2. Step 2: Convert to fraction form
    51,571.80/77,312.70 = 20,003.40/x
  3. Step 3: Cross multiply
    51,571.80x = 77,312.70 × 20,003.40
  4. Step 4: Simplify right side
    51,571.80x = 1,546,516,863.18
  5. Step 5: Solve for x
    x = 1,546,516,863.18/51,571.80
  6. Step 6: Final answer
    x = 29,987.65

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1.5x scale

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.