Home / 40,784.20-61,176.30-20,003.40

Finding the Fourth Proportional to 40,784.20, 61,176.30 and 20,003.40

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Solution

The fourth proportional to 40,784.20, 61,176.30 and 20,003.40 is: 30,005.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,784.20 : 61,176.30 = 20,003.40 : x
  2. Step 2: Convert to fraction form
    40,784.20/61,176.30 = 20,003.40/x
  3. Step 3: Cross multiply
    40,784.20x = 61,176.30 × 20,003.40
  4. Step 4: Simplify right side
    40,784.20x = 1,223,733,999.42
  5. Step 5: Solve for x
    x = 1,223,733,999.42/40,784.20
  6. Step 6: Final answer
    x = 30,005.10

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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.