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Finding the Fourth Proportional to 70,823.28, 106,250.08 and 28,702.88

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Solution

The fourth proportional to 70,823.28, 106,250.08 and 28,702.88 is: 43,060.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,823.28 : 106,250.08 = 28,702.88 : x
  2. Step 2: Convert to fraction form
    70,823.28/106,250.08 = 28,702.88/x
  3. Step 3: Cross multiply
    70,823.28x = 106,250.08 × 28,702.88
  4. Step 4: Simplify right side
    70,823.28x = 3,049,683,296.23
  5. Step 5: Solve for x
    x = 3,049,683,296.23/70,823.28
  6. Step 6: Final answer
    x = 43,060.46

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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.