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Finding the Fourth Proportional to 73,911.70, 101,986.41 and 42,081.22

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Solution

The fourth proportional to 73,911.70, 101,986.41 and 42,081.22 is: 58,065.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,911.70 : 101,986.41 = 42,081.22 : x
  2. Step 2: Convert to fraction form
    73,911.70/101,986.41 = 42,081.22/x
  3. Step 3: Cross multiply
    73,911.70x = 101,986.41 × 42,081.22
  4. Step 4: Simplify right side
    73,911.70x = 4,291,712,301.25
  5. Step 5: Solve for x
    x = 4,291,712,301.25/73,911.70
  6. Step 6: Final answer
    x = 58,065.40

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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.