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Finding the Fourth Proportional to 70,972.71, 106,277.27 and 68,870.49

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Solution

The fourth proportional to 70,972.71, 106,277.27 and 68,870.49 is: 103,129.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,972.71 : 106,277.27 = 68,870.49 : x
  2. Step 2: Convert to fraction form
    70,972.71/106,277.27 = 68,870.49/x
  3. Step 3: Cross multiply
    70,972.71x = 106,277.27 × 68,870.49
  4. Step 4: Simplify right side
    70,972.71x = 7,319,367,316.41
  5. Step 5: Solve for x
    x = 7,319,367,316.41/70,972.71
  6. Step 6: Final answer
    x = 103,129.32

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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.