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Finding the Fourth Proportional to 70,845.92, 106,350.80 and 42,808.80

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Solution

The fourth proportional to 70,845.92, 106,350.80 and 42,808.80 is: 64,262.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,845.92 : 106,350.80 = 42,808.80 : x
  2. Step 2: Convert to fraction form
    70,845.92/106,350.80 = 42,808.80/x
  3. Step 3: Cross multiply
    70,845.92x = 106,350.80 × 42,808.80
  4. Step 4: Simplify right side
    70,845.92x = 4,552,750,127.04
  5. Step 5: Solve for x
    x = 4,552,750,127.04/70,845.92
  6. Step 6: Final answer
    x = 64,262.70

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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.