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Finding the Fourth Proportional to 69,004.70, 103,434.15 and 39,358.70

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Solution

The fourth proportional to 69,004.70, 103,434.15 and 39,358.70 is: 58,996.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,004.70 : 103,434.15 = 39,358.70 : x
  2. Step 2: Convert to fraction form
    69,004.70/103,434.15 = 39,358.70/x
  3. Step 3: Cross multiply
    69,004.70x = 103,434.15 × 39,358.70
  4. Step 4: Simplify right side
    69,004.70x = 4,071,033,679.61
  5. Step 5: Solve for x
    x = 4,071,033,679.61/69,004.70
  6. Step 6: Final answer
    x = 58,996.47

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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.