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Finding the Fourth Proportional to 73,312.32, 109,719.24 and 45,250.12

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Solution

The fourth proportional to 73,312.32, 109,719.24 and 45,250.12 is: 67,721.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,312.32 : 109,719.24 = 45,250.12 : x
  2. Step 2: Convert to fraction form
    73,312.32/109,719.24 = 45,250.12/x
  3. Step 3: Cross multiply
    73,312.32x = 109,719.24 × 45,250.12
  4. Step 4: Simplify right side
    73,312.32x = 4,964,808,776.31
  5. Step 5: Solve for x
    x = 4,964,808,776.31/73,312.32
  6. Step 6: Final answer
    x = 67,721.34

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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.