Home / 78,769.81-118,120.15-29,487.25

Finding the Fourth Proportional to 78,769.81, 118,120.15 and 29,487.25

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Solution

The fourth proportional to 78,769.81, 118,120.15 and 29,487.25 is: 44,217.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,769.81 : 118,120.15 = 29,487.25 : x
  2. Step 2: Convert to fraction form
    78,769.81/118,120.15 = 29,487.25/x
  3. Step 3: Cross multiply
    78,769.81x = 118,120.15 × 29,487.25
  4. Step 4: Simplify right side
    78,769.81x = 3,483,038,393.09
  5. Step 5: Solve for x
    x = 3,483,038,393.09/78,769.81
  6. Step 6: Final answer
    x = 44,217.94

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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.