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Finding the Fourth Proportional to 69,866.67, 96,415.71 and 39,235.50

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Solution

The fourth proportional to 69,866.67, 96,415.71 and 39,235.50 is: 54,144.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,866.67 : 96,415.71 = 39,235.50 : x
  2. Step 2: Convert to fraction form
    69,866.67/96,415.71 = 39,235.50/x
  3. Step 3: Cross multiply
    69,866.67x = 96,415.71 × 39,235.50
  4. Step 4: Simplify right side
    69,866.67x = 3,782,918,589.71
  5. Step 5: Solve for x
    x = 3,782,918,589.71/69,866.67
  6. Step 6: Final answer
    x = 54,144.82

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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.