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Finding the Fourth Proportional to 70,325.28, 105,526.92 and 28,801.44

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Solution

The fourth proportional to 70,325.28, 105,526.92 and 28,801.44 is: 43,218.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,325.28 : 105,526.92 = 28,801.44 : x
  2. Step 2: Convert to fraction form
    70,325.28/105,526.92 = 28,801.44/x
  3. Step 3: Cross multiply
    70,325.28x = 105,526.92 × 28,801.44
  4. Step 4: Simplify right side
    70,325.28x = 3,039,327,254.76
  5. Step 5: Solve for x
    x = 3,039,327,254.76/70,325.28
  6. Step 6: Final answer
    x = 43,218.13

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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.