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Finding the Fourth Proportional to 70,128.76, 96,777.84 and 38,296.84

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Solution

The fourth proportional to 70,128.76, 96,777.84 and 38,296.84 is: 52,849.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,128.76 : 96,777.84 = 38,296.84 : x
  2. Step 2: Convert to fraction form
    70,128.76/96,777.84 = 38,296.84/x
  3. Step 3: Cross multiply
    70,128.76x = 96,777.84 × 38,296.84
  4. Step 4: Simplify right side
    70,128.76x = 3,706,285,454.03
  5. Step 5: Solve for x
    x = 3,706,285,454.03/70,128.76
  6. Step 6: Final answer
    x = 52,849.72

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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.