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Finding the Fourth Proportional to 67,894.05, 101,801.60 and 45,430.40

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Solution

The fourth proportional to 67,894.05, 101,801.60 and 45,430.40 is: 68,119.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,894.05 : 101,801.60 = 45,430.40 : x
  2. Step 2: Convert to fraction form
    67,894.05/101,801.60 = 45,430.40/x
  3. Step 3: Cross multiply
    67,894.05x = 101,801.60 × 45,430.40
  4. Step 4: Simplify right side
    67,894.05x = 4,624,887,293.11
  5. Step 5: Solve for x
    x = 4,624,887,293.11/67,894.05
  6. Step 6: Final answer
    x = 68,119.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.