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Finding the Fourth Proportional to 69,970.40, 96,559.36 and 39,765.77

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Solution

The fourth proportional to 69,970.40, 96,559.36 and 39,765.77 is: 54,876.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,970.40 : 96,559.36 = 39,765.77 : x
  2. Step 2: Convert to fraction form
    69,970.40/96,559.36 = 39,765.77/x
  3. Step 3: Cross multiply
    69,970.40x = 96,559.36 × 39,765.77
  4. Step 4: Simplify right side
    69,970.40x = 3,839,757,080.99
  5. Step 5: Solve for x
    x = 3,839,757,080.99/69,970.40
  6. Step 6: Final answer
    x = 54,876.88

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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.