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Finding the Fourth Proportional to 69,855.66, 104,784.57 and 38,887.74

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Solution

The fourth proportional to 69,855.66, 104,784.57 and 38,887.74 is: 58,332.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,855.66 : 104,784.57 = 38,887.74 : x
  2. Step 2: Convert to fraction form
    69,855.66/104,784.57 = 38,887.74/x
  3. Step 3: Cross multiply
    69,855.66x = 104,784.57 × 38,887.74
  4. Step 4: Simplify right side
    69,855.66x = 4,074,835,114.17
  5. Step 5: Solve for x
    x = 4,074,835,114.17/69,855.66
  6. Step 6: Final answer
    x = 58,332.21

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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.