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Finding the Fourth Proportional to 79,007.90, 118,576.65 and 76,415.90

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Solution

The fourth proportional to 79,007.90, 118,576.65 and 76,415.90 is: 114,686.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,007.90 : 118,576.65 = 76,415.90 : x
  2. Step 2: Convert to fraction form
    79,007.90/118,576.65 = 76,415.90/x
  3. Step 3: Cross multiply
    79,007.90x = 118,576.65 × 76,415.90
  4. Step 4: Simplify right side
    79,007.90x = 9,061,141,428.74
  5. Step 5: Solve for x
    x = 9,061,141,428.74/79,007.90
  6. Step 6: Final answer
    x = 114,686.52

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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.