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Finding the Fourth Proportional to 79,657.17, 109,914.02 and 45,659.40

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Solution

The fourth proportional to 79,657.17, 109,914.02 and 45,659.40 is: 63,002.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,657.17 : 109,914.02 = 45,659.40 : x
  2. Step 2: Convert to fraction form
    79,657.17/109,914.02 = 45,659.40/x
  3. Step 3: Cross multiply
    79,657.17x = 109,914.02 × 45,659.40
  4. Step 4: Simplify right side
    79,657.17x = 5,018,608,204.79
  5. Step 5: Solve for x
    x = 5,018,608,204.79/79,657.17
  6. Step 6: Final answer
    x = 63,002.59

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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.