Home / 76,829.80-115,244.70-53,210.20

Finding the Fourth Proportional to 76,829.80, 115,244.70 and 53,210.20

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Solution

The fourth proportional to 76,829.80, 115,244.70 and 53,210.20 is: 79,815.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,829.80 : 115,244.70 = 53,210.20 : x
  2. Step 2: Convert to fraction form
    76,829.80/115,244.70 = 53,210.20/x
  3. Step 3: Cross multiply
    76,829.80x = 115,244.70 × 53,210.20
  4. Step 4: Simplify right side
    76,829.80x = 6,132,193,535.94
  5. Step 5: Solve for x
    x = 6,132,193,535.94/76,829.80
  6. Step 6: Final answer
    x = 79,815.30

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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.