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Finding the Fourth Proportional to 62,820.80, 94,231.20 and 20,700.80

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Solution

The fourth proportional to 62,820.80, 94,231.20 and 20,700.80 is: 31,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,820.80 : 94,231.20 = 20,700.80 : x
  2. Step 2: Convert to fraction form
    62,820.80/94,231.20 = 20,700.80/x
  3. Step 3: Cross multiply
    62,820.80x = 94,231.20 × 20,700.80
  4. Step 4: Simplify right side
    62,820.80x = 1,950,661,224.96
  5. Step 5: Solve for x
    x = 1,950,661,224.96/62,820.80
  6. Step 6: Final answer
    x = 31,051.20

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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.