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Finding the Fourth Proportional to 70,789.96, 97,691.80 and 40,165.13

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Solution

The fourth proportional to 70,789.96, 97,691.80 and 40,165.13 is: 55,428.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,789.96 : 97,691.80 = 40,165.13 : x
  2. Step 2: Convert to fraction form
    70,789.96/97,691.80 = 40,165.13/x
  3. Step 3: Cross multiply
    70,789.96x = 97,691.80 × 40,165.13
  4. Step 4: Simplify right side
    70,789.96x = 3,923,803,846.93
  5. Step 5: Solve for x
    x = 3,923,803,846.93/70,789.96
  6. Step 6: Final answer
    x = 55,428.82

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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.