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Finding the Fourth Proportional to 70,880.34, 106,320.98 and 18,290.28

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Solution

The fourth proportional to 70,880.34, 106,320.98 and 18,290.28 is: 27,435.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,880.34 : 106,320.98 = 18,290.28 : x
  2. Step 2: Convert to fraction form
    70,880.34/106,320.98 = 18,290.28/x
  3. Step 3: Cross multiply
    70,880.34x = 106,320.98 × 18,290.28
  4. Step 4: Simplify right side
    70,880.34x = 1,944,640,402.62
  5. Step 5: Solve for x
    x = 1,944,640,402.62/70,880.34
  6. Step 6: Final answer
    x = 27,435.54

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1.5x scale

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.