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Finding the Fourth Proportional to 79,322.28, 109,468.20 and 47,485.02

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Solution

The fourth proportional to 79,322.28, 109,468.20 and 47,485.02 is: 65,531.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,322.28 : 109,468.20 = 47,485.02 : x
  2. Step 2: Convert to fraction form
    79,322.28/109,468.20 = 47,485.02/x
  3. Step 3: Cross multiply
    79,322.28x = 109,468.20 × 47,485.02
  4. Step 4: Simplify right side
    79,322.28x = 5,198,099,666.36
  5. Step 5: Solve for x
    x = 5,198,099,666.36/79,322.28
  6. Step 6: Final answer
    x = 65,531.40

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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.