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Finding the Fourth Proportional to 69,395.50, 95,765.79 and 39,587.50

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Solution

The fourth proportional to 69,395.50, 95,765.79 and 39,587.50 is: 54,630.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,395.50 : 95,765.79 = 39,587.50 : x
  2. Step 2: Convert to fraction form
    69,395.50/95,765.79 = 39,587.50/x
  3. Step 3: Cross multiply
    69,395.50x = 95,765.79 × 39,587.50
  4. Step 4: Simplify right side
    69,395.50x = 3,791,128,211.63
  5. Step 5: Solve for x
    x = 3,791,128,211.63/69,395.50
  6. Step 6: Final answer
    x = 54,630.75

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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.