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Finding the Fourth Proportional to 78,698.00, 118,003.71 and 53,766.20

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Solution

The fourth proportional to 78,698.00, 118,003.71 and 53,766.20 is: 80,619.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,698.00 : 118,003.71 = 53,766.20 : x
  2. Step 2: Convert to fraction form
    78,698.00/118,003.71 = 53,766.20/x
  3. Step 3: Cross multiply
    78,698.00x = 118,003.71 × 53,766.20
  4. Step 4: Simplify right side
    78,698.00x = 6,344,610,482.58
  5. Step 5: Solve for x
    x = 6,344,610,482.58/78,698.00
  6. Step 6: Final answer
    x = 80,619.72

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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.