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Finding the Fourth Proportional to 69,880.94, 96,430.82 and 39,666.88

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Solution

The fourth proportional to 69,880.94, 96,430.82 and 39,666.88 is: 54,737.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,880.94 : 96,430.82 = 39,666.88 : x
  2. Step 2: Convert to fraction form
    69,880.94/96,430.82 = 39,666.88/x
  3. Step 3: Cross multiply
    69,880.94x = 96,430.82 × 39,666.88
  4. Step 4: Simplify right side
    69,880.94x = 3,825,109,765.24
  5. Step 5: Solve for x
    x = 3,825,109,765.24/69,880.94
  6. Step 6: Final answer
    x = 54,737.53

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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.