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Finding the Fourth Proportional to 70,702.89, 106,041.57 and 28,581.27

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Solution

The fourth proportional to 70,702.89, 106,041.57 and 28,581.27 is: 42,866.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,702.89 : 106,041.57 = 28,581.27 : x
  2. Step 2: Convert to fraction form
    70,702.89/106,041.57 = 28,581.27/x
  3. Step 3: Cross multiply
    70,702.89x = 106,041.57 × 28,581.27
  4. Step 4: Simplify right side
    70,702.89x = 3,030,802,743.39
  5. Step 5: Solve for x
    x = 3,030,802,743.39/70,702.89
  6. Step 6: Final answer
    x = 42,866.74

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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.