Home / 79,403.28-109,627.80-49,220.70

Finding the Fourth Proportional to 79,403.28, 109,627.80 and 49,220.70

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Solution

The fourth proportional to 79,403.28, 109,627.80 and 49,220.70 is: 67,956.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,403.28 : 109,627.80 = 49,220.70 : x
  2. Step 2: Convert to fraction form
    79,403.28/109,627.80 = 49,220.70/x
  3. Step 3: Cross multiply
    79,403.28x = 109,627.80 × 49,220.70
  4. Step 4: Simplify right side
    79,403.28x = 5,395,957,055.46
  5. Step 5: Solve for x
    x = 5,395,957,055.46/79,403.28
  6. Step 6: Final answer
    x = 67,956.35

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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.