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Finding the Fourth Proportional to 79,641.18, 119,461.77 and 20,476.89

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Solution

The fourth proportional to 79,641.18, 119,461.77 and 20,476.89 is: 30,715.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,641.18 : 119,461.77 = 20,476.89 : x
  2. Step 2: Convert to fraction form
    79,641.18/119,461.77 = 20,476.89/x
  3. Step 3: Cross multiply
    79,641.18x = 119,461.77 × 20,476.89
  4. Step 4: Simplify right side
    79,641.18x = 2,446,205,523.50
  5. Step 5: Solve for x
    x = 2,446,205,523.50/79,641.18
  6. Step 6: Final answer
    x = 30,715.34

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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.