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Finding the Fourth Proportional to 69,035.70, 103,480.65 and 39,389.70

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Solution

The fourth proportional to 69,035.70, 103,480.65 and 39,389.70 is: 59,042.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,035.70 : 103,480.65 = 39,389.70 : x
  2. Step 2: Convert to fraction form
    69,035.70/103,480.65 = 39,389.70/x
  3. Step 3: Cross multiply
    69,035.70x = 103,480.65 × 39,389.70
  4. Step 4: Simplify right side
    69,035.70x = 4,076,071,759.31
  5. Step 5: Solve for x
    x = 4,076,071,759.31/69,035.70
  6. Step 6: Final answer
    x = 59,042.96

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1.5x scale

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.