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Finding the Fourth Proportional to 36,700.80, 55,051.20 and 20,954.40

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Solution

The fourth proportional to 36,700.80, 55,051.20 and 20,954.40 is: 31,431.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,700.80 : 55,051.20 = 20,954.40 : x
  2. Step 2: Convert to fraction form
    36,700.80/55,051.20 = 20,954.40/x
  3. Step 3: Cross multiply
    36,700.80x = 55,051.20 × 20,954.40
  4. Step 4: Simplify right side
    36,700.80x = 1,153,564,865.28
  5. Step 5: Solve for x
    x = 1,153,564,865.28/36,700.80
  6. Step 6: Final answer
    x = 31,431.60

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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.