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Finding the Fourth Proportional to 79,277.60, 109,399.80 and 47,427.68

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Solution

The fourth proportional to 79,277.60, 109,399.80 and 47,427.68 is: 65,448.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,277.60 : 109,399.80 = 47,427.68 : x
  2. Step 2: Convert to fraction form
    79,277.60/109,399.80 = 47,427.68/x
  3. Step 3: Cross multiply
    79,277.60x = 109,399.80 × 47,427.68
  4. Step 4: Simplify right side
    79,277.60x = 5,188,578,706.46
  5. Step 5: Solve for x
    x = 5,188,578,706.46/79,277.60
  6. Step 6: Final answer
    x = 65,448.23

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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.