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Finding the Fourth Proportional to 71,909.87, 99,414.99 and 53,973.72

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Solution

The fourth proportional to 71,909.87, 99,414.99 and 53,973.72 is: 74,618.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,909.87 : 99,414.99 = 53,973.72 : x
  2. Step 2: Convert to fraction form
    71,909.87/99,414.99 = 53,973.72/x
  3. Step 3: Cross multiply
    71,909.87x = 99,414.99 × 53,973.72
  4. Step 4: Simplify right side
    71,909.87x = 5,365,796,834.06
  5. Step 5: Solve for x
    x = 5,365,796,834.06/71,909.87
  6. Step 6: Final answer
    x = 74,618.37

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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.