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Finding the Fourth Proportional to 70,571.67, 105,776.97 and 28,424.76

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Solution

The fourth proportional to 70,571.67, 105,776.97 and 28,424.76 is: 42,604.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,571.67 : 105,776.97 = 28,424.76 : x
  2. Step 2: Convert to fraction form
    70,571.67/105,776.97 = 28,424.76/x
  3. Step 3: Cross multiply
    70,571.67x = 105,776.97 × 28,424.76
  4. Step 4: Simplify right side
    70,571.67x = 3,006,684,985.78
  5. Step 5: Solve for x
    x = 3,006,684,985.78/70,571.67
  6. Step 6: Final answer
    x = 42,604.70

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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.