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Finding the Fourth Proportional to 79,685.42, 118,945.11 and 70,227.20

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Solution

The fourth proportional to 79,685.42, 118,945.11 and 70,227.20 is: 104,826.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,685.42 : 118,945.11 = 70,227.20 : x
  2. Step 2: Convert to fraction form
    79,685.42/118,945.11 = 70,227.20/x
  3. Step 3: Cross multiply
    79,685.42x = 118,945.11 × 70,227.20
  4. Step 4: Simplify right side
    79,685.42x = 8,353,181,434.27
  5. Step 5: Solve for x
    x = 8,353,181,434.27/79,685.42
  6. Step 6: Final answer
    x = 104,826.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.