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Finding the Fourth Proportional to 73,079.48, 109,577.20 and 28,654.20

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Solution

The fourth proportional to 73,079.48, 109,577.20 and 28,654.20 is: 42,964.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,079.48 : 109,577.20 = 28,654.20 : x
  2. Step 2: Convert to fraction form
    73,079.48/109,577.20 = 28,654.20/x
  3. Step 3: Cross multiply
    73,079.48x = 109,577.20 × 28,654.20
  4. Step 4: Simplify right side
    73,079.48x = 3,139,847,004.24
  5. Step 5: Solve for x
    x = 3,139,847,004.24/73,079.48
  6. Step 6: Final answer
    x = 42,964.82

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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.