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Finding the Fourth Proportional to 79,226.30, 109,335.31 and 45,240.32

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Solution

The fourth proportional to 79,226.30, 109,335.31 and 45,240.32 is: 62,433.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,226.30 : 109,335.31 = 45,240.32 : x
  2. Step 2: Convert to fraction form
    79,226.30/109,335.31 = 45,240.32/x
  3. Step 3: Cross multiply
    79,226.30x = 109,335.31 × 45,240.32
  4. Step 4: Simplify right side
    79,226.30x = 4,946,364,411.70
  5. Step 5: Solve for x
    x = 4,946,364,411.70/79,226.30
  6. Step 6: Final answer
    x = 62,433.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.