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Finding the Fourth Proportional to 101,741.81, 140,401.08 and 56,419.07

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Solution

The fourth proportional to 101,741.81, 140,401.08 and 56,419.07 is: 77,856.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,741.81 : 140,401.08 = 56,419.07 : x
  2. Step 2: Convert to fraction form
    101,741.81/140,401.08 = 56,419.07/x
  3. Step 3: Cross multiply
    101,741.81x = 140,401.08 × 56,419.07
  4. Step 4: Simplify right side
    101,741.81x = 7,921,297,658.59
  5. Step 5: Solve for x
    x = 7,921,297,658.59/101,741.81
  6. Step 6: Final answer
    x = 77,856.86

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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.