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Finding the Fourth Proportional to 70,281.70, 96,988.70 and 38,450.60

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Solution

The fourth proportional to 70,281.70, 96,988.70 and 38,450.60 is: 53,061.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,281.70 : 96,988.70 = 38,450.60 : x
  2. Step 2: Convert to fraction form
    70,281.70/96,988.70 = 38,450.60/x
  3. Step 3: Cross multiply
    70,281.70x = 96,988.70 × 38,450.60
  4. Step 4: Simplify right side
    70,281.70x = 3,729,273,708.22
  5. Step 5: Solve for x
    x = 3,729,273,708.22/70,281.70
  6. Step 6: Final answer
    x = 53,061.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.