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Finding the Fourth Proportional to 69,907.50, 96,479.64 and 39,700.98

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Solution

The fourth proportional to 69,907.50, 96,479.64 and 39,700.98 is: 54,791.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,907.50 : 96,479.64 = 39,700.98 : x
  2. Step 2: Convert to fraction form
    69,907.50/96,479.64 = 39,700.98/x
  3. Step 3: Cross multiply
    69,907.50x = 96,479.64 × 39,700.98
  4. Step 4: Simplify right side
    69,907.50x = 3,830,336,258.05
  5. Step 5: Solve for x
    x = 3,830,336,258.05/69,907.50
  6. Step 6: Final answer
    x = 54,791.49

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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.