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Finding the Fourth Proportional to 69,938.40, 96,292.08 and 65,169.12

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Solution

The fourth proportional to 69,938.40, 96,292.08 and 65,169.12 is: 89,725.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,938.40 : 96,292.08 = 65,169.12 : x
  2. Step 2: Convert to fraction form
    69,938.40/96,292.08 = 65,169.12/x
  3. Step 3: Cross multiply
    69,938.40x = 96,292.08 × 65,169.12
  4. Step 4: Simplify right side
    69,938.40x = 6,275,270,116.57
  5. Step 5: Solve for x
    x = 6,275,270,116.57/69,938.40
  6. Step 6: Final answer
    x = 89,725.67

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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.