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Finding the Fourth Proportional to 78,321.84, 108,082.96 and 44,336.76

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Solution

The fourth proportional to 78,321.84, 108,082.96 and 44,336.76 is: 61,184.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,321.84 : 108,082.96 = 44,336.76 : x
  2. Step 2: Convert to fraction form
    78,321.84/108,082.96 = 44,336.76/x
  3. Step 3: Cross multiply
    78,321.84x = 108,082.96 × 44,336.76
  4. Step 4: Simplify right side
    78,321.84x = 4,792,048,257.61
  5. Step 5: Solve for x
    x = 4,792,048,257.61/78,321.84
  6. Step 6: Final answer
    x = 61,184.06

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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.