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Finding the Fourth Proportional to 73,890.76, 101,965 and 43,678.84

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Solution

The fourth proportional to 73,890.76, 101,965 and 43,678.84 is: 60,274.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,890.76 : 101,965 = 43,678.84 : x
  2. Step 2: Convert to fraction form
    73,890.76/101,965 = 43,678.84/x
  3. Step 3: Cross multiply
    73,890.76x = 101,965 × 43,678.84
  4. Step 4: Simplify right side
    73,890.76x = 4,453,712,920.60
  5. Step 5: Solve for x
    x = 4,453,712,920.60/73,890.76
  6. Step 6: Final answer
    x = 60,274.29

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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.