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Finding the Fourth Proportional to 79,254.45, 109,275.48 and 68,479.83

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Solution

The fourth proportional to 79,254.45, 109,275.48 and 68,479.83 is: 94,419.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,254.45 : 109,275.48 = 68,479.83 : x
  2. Step 2: Convert to fraction form
    79,254.45/109,275.48 = 68,479.83/x
  3. Step 3: Cross multiply
    79,254.45x = 109,275.48 × 68,479.83
  4. Step 4: Simplify right side
    79,254.45x = 7,483,166,293.57
  5. Step 5: Solve for x
    x = 7,483,166,293.57/79,254.45
  6. Step 6: Final answer
    x = 94,419.51

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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.