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Finding the Fourth Proportional to 79,133.40, 109,255.08 and 70,620.96

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Solution

The fourth proportional to 79,133.40, 109,255.08 and 70,620.96 is: 97,502.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,133.40 : 109,255.08 = 70,620.96 : x
  2. Step 2: Convert to fraction form
    79,133.40/109,255.08 = 70,620.96/x
  3. Step 3: Cross multiply
    79,133.40x = 109,255.08 × 70,620.96
  4. Step 4: Simplify right side
    79,133.40x = 7,715,698,634.48
  5. Step 5: Solve for x
    x = 7,715,698,634.48/79,133.40
  6. Step 6: Final answer
    x = 97,502.43

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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.