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Finding the Fourth Proportional to 78,355.65, 108,133.26 and 44,363.55

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Solution

The fourth proportional to 78,355.65, 108,133.26 and 44,363.55 is: 61,223.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,355.65 : 108,133.26 = 44,363.55 : x
  2. Step 2: Convert to fraction form
    78,355.65/108,133.26 = 44,363.55/x
  3. Step 3: Cross multiply
    78,355.65x = 108,133.26 × 44,363.55
  4. Step 4: Simplify right side
    78,355.65x = 4,797,175,286.67
  5. Step 5: Solve for x
    x = 4,797,175,286.67/78,355.65
  6. Step 6: Final answer
    x = 61,223.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.