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Finding the Fourth Proportional to 73,130.20, 109,695.30 and 53,301.40

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Solution

The fourth proportional to 73,130.20, 109,695.30 and 53,301.40 is: 79,952.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,130.20 : 109,695.30 = 53,301.40 : x
  2. Step 2: Convert to fraction form
    73,130.20/109,695.30 = 53,301.40/x
  3. Step 3: Cross multiply
    73,130.20x = 109,695.30 × 53,301.40
  4. Step 4: Simplify right side
    73,130.20x = 5,846,913,063.42
  5. Step 5: Solve for x
    x = 5,846,913,063.42/73,130.20
  6. Step 6: Final answer
    x = 79,952.10

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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.