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Finding the Fourth Proportional to 70,990.62, 106,526.63 and 28,862.92

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Solution

The fourth proportional to 70,990.62, 106,526.63 and 28,862.92 is: 43,310.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,990.62 : 106,526.63 = 28,862.92 : x
  2. Step 2: Convert to fraction form
    70,990.62/106,526.63 = 28,862.92/x
  3. Step 3: Cross multiply
    70,990.62x = 106,526.63 × 28,862.92
  4. Step 4: Simplify right side
    70,990.62x = 3,074,669,599.56
  5. Step 5: Solve for x
    x = 3,074,669,599.56/70,990.62
  6. Step 6: Final answer
    x = 43,310.93

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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.