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Finding the Fourth Proportional to 79,798.40, 119,620.80 and 62,019.20

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Solution

The fourth proportional to 79,798.40, 119,620.80 and 62,019.20 is: 92,969.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,798.40 : 119,620.80 = 62,019.20 : x
  2. Step 2: Convert to fraction form
    79,798.40/119,620.80 = 62,019.20/x
  3. Step 3: Cross multiply
    79,798.40x = 119,620.80 × 62,019.20
  4. Step 4: Simplify right side
    79,798.40x = 7,418,786,319.36
  5. Step 5: Solve for x
    x = 7,418,786,319.36/79,798.40
  6. Step 6: Final answer
    x = 92,969.11

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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.