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Finding the Fourth Proportional to 79,388.64, 109,561.86 and 52,484.40

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Solution

The fourth proportional to 79,388.64, 109,561.86 and 52,484.40 is: 72,432.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,388.64 : 109,561.86 = 52,484.40 : x
  2. Step 2: Convert to fraction form
    79,388.64/109,561.86 = 52,484.40/x
  3. Step 3: Cross multiply
    79,388.64x = 109,561.86 × 52,484.40
  4. Step 4: Simplify right side
    79,388.64x = 5,750,288,484.98
  5. Step 5: Solve for x
    x = 5,750,288,484.98/79,388.64
  6. Step 6: Final answer
    x = 72,432.13

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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.