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Finding the Fourth Proportional to 73,850.20, 101,911.96 and 42,018.40

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Solution

The fourth proportional to 73,850.20, 101,911.96 and 42,018.40 is: 57,984.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,850.20 : 101,911.96 = 42,018.40 : x
  2. Step 2: Convert to fraction form
    73,850.20/101,911.96 = 42,018.40/x
  3. Step 3: Cross multiply
    73,850.20x = 101,911.96 × 42,018.40
  4. Step 4: Simplify right side
    73,850.20x = 4,282,177,500.06
  5. Step 5: Solve for x
    x = 4,282,177,500.06/73,850.20
  6. Step 6: Final answer
    x = 57,984.64

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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.