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Finding the Fourth Proportional to 70,244.60, 105,407.91 and 28,144.85

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Solution

The fourth proportional to 70,244.60, 105,407.91 and 28,144.85 is: 42,233.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,244.60 : 105,407.91 = 28,144.85 : x
  2. Step 2: Convert to fraction form
    70,244.60/105,407.91 = 28,144.85/x
  3. Step 3: Cross multiply
    70,244.60x = 105,407.91 × 28,144.85
  4. Step 4: Simplify right side
    70,244.60x = 2,966,689,288.72
  5. Step 5: Solve for x
    x = 2,966,689,288.72/70,244.60
  6. Step 6: Final answer
    x = 42,233.70

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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.