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Finding the Fourth Proportional to 79,015.80, 118,523.70 and 19,853.40

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Solution

The fourth proportional to 79,015.80, 118,523.70 and 19,853.40 is: 29,780.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,015.80 : 118,523.70 = 19,853.40 : x
  2. Step 2: Convert to fraction form
    79,015.80/118,523.70 = 19,853.40/x
  3. Step 3: Cross multiply
    79,015.80x = 118,523.70 × 19,853.40
  4. Step 4: Simplify right side
    79,015.80x = 2,353,098,425.58
  5. Step 5: Solve for x
    x = 2,353,098,425.58/79,015.80
  6. Step 6: Final answer
    x = 29,780.10

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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.