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Finding the Fourth Proportional to 78,984.65, 118,484.39 and 29,065.70

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Solution

The fourth proportional to 78,984.65, 118,484.39 and 29,065.70 is: 43,601.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,984.65 : 118,484.39 = 29,065.70 : x
  2. Step 2: Convert to fraction form
    78,984.65/118,484.39 = 29,065.70/x
  3. Step 3: Cross multiply
    78,984.65x = 118,484.39 × 29,065.70
  4. Step 4: Simplify right side
    78,984.65x = 3,443,831,214.67
  5. Step 5: Solve for x
    x = 3,443,831,214.67/78,984.65
  6. Step 6: Final answer
    x = 43,601.27

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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.