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Finding the Fourth Proportional to 79,322.80, 118,905.34 and 39,759.16

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Solution

The fourth proportional to 79,322.80, 118,905.34 and 39,759.16 is: 59,599.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,322.80 : 118,905.34 = 39,759.16 : x
  2. Step 2: Convert to fraction form
    79,322.80/118,905.34 = 39,759.16/x
  3. Step 3: Cross multiply
    79,322.80x = 118,905.34 × 39,759.16
  4. Step 4: Simplify right side
    79,322.80x = 4,727,576,437.91
  5. Step 5: Solve for x
    x = 4,727,576,437.91/79,322.80
  6. Step 6: Final answer
    x = 59,599.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.