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Finding the Fourth Proportional to 79,410.40, 119,118.08 and 39,945.92

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Solution

The fourth proportional to 79,410.40, 119,118.08 and 39,945.92 is: 59,920.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,410.40 : 119,118.08 = 39,945.92 : x
  2. Step 2: Convert to fraction form
    79,410.40/119,118.08 = 39,945.92/x
  3. Step 3: Cross multiply
    79,410.40x = 119,118.08 × 39,945.92
  4. Step 4: Simplify right side
    79,410.40x = 4,758,281,294.23
  5. Step 5: Solve for x
    x = 4,758,281,294.23/79,410.40
  6. Step 6: Final answer
    x = 59,920.13

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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.