Home / 79,316.28-109,459.89-47,479.03

Finding the Fourth Proportional to 79,316.28, 109,459.89 and 47,479.03

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Solution

The fourth proportional to 79,316.28, 109,459.89 and 47,479.03 is: 65,523.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,316.28 : 109,459.89 = 47,479.03 : x
  2. Step 2: Convert to fraction form
    79,316.28/109,459.89 = 47,479.03/x
  3. Step 3: Cross multiply
    79,316.28x = 109,459.89 × 47,479.03
  4. Step 4: Simplify right side
    79,316.28x = 5,197,049,127.46
  5. Step 5: Solve for x
    x = 5,197,049,127.46/79,316.28
  6. Step 6: Final answer
    x = 65,523.11

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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.