Home / 42,996.20-64,494.30-28,999.40

Finding the Fourth Proportional to 42,996.20, 64,494.30 and 28,999.40

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Solution

The fourth proportional to 42,996.20, 64,494.30 and 28,999.40 is: 43,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,996.20 : 64,494.30 = 28,999.40 : x
  2. Step 2: Convert to fraction form
    42,996.20/64,494.30 = 28,999.40/x
  3. Step 3: Cross multiply
    42,996.20x = 64,494.30 × 28,999.40
  4. Step 4: Simplify right side
    42,996.20x = 1,870,296,003.42
  5. Step 5: Solve for x
    x = 1,870,296,003.42/42,996.20
  6. Step 6: Final answer
    x = 43,499.10

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Similar ratio
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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.