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Finding the Fourth Proportional to 79,426.80, 119,140.25 and 49,865.40

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Solution

The fourth proportional to 79,426.80, 119,140.25 and 49,865.40 is: 74,798.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,426.80 : 119,140.25 = 49,865.40 : x
  2. Step 2: Convert to fraction form
    79,426.80/119,140.25 = 49,865.40/x
  3. Step 3: Cross multiply
    79,426.80x = 119,140.25 × 49,865.40
  4. Step 4: Simplify right side
    79,426.80x = 5,940,975,973.02
  5. Step 5: Solve for x
    x = 5,940,975,973.02/79,426.80
  6. Step 6: Final answer
    x = 74,798.13

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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.