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Finding the Fourth Proportional to 79,368.70, 119,053.71 and 20,204.38

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Solution

The fourth proportional to 79,368.70, 119,053.71 and 20,204.38 is: 30,306.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,368.70 : 119,053.71 = 20,204.38 : x
  2. Step 2: Convert to fraction form
    79,368.70/119,053.71 = 20,204.38/x
  3. Step 3: Cross multiply
    79,368.70x = 119,053.71 × 20,204.38
  4. Step 4: Simplify right side
    79,368.70x = 2,405,406,397.25
  5. Step 5: Solve for x
    x = 2,405,406,397.25/79,368.70
  6. Step 6: Final answer
    x = 30,306.74

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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.