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Finding the Fourth Proportional to 78,385.80, 108,179.08 and 44,400.34

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Solution

The fourth proportional to 78,385.80, 108,179.08 and 44,400.34 is: 61,276.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,385.80 : 108,179.08 = 44,400.34 : x
  2. Step 2: Convert to fraction form
    78,385.80/108,179.08 = 44,400.34/x
  3. Step 3: Cross multiply
    78,385.80x = 108,179.08 × 44,400.34
  4. Step 4: Simplify right side
    78,385.80x = 4,803,187,932.89
  5. Step 5: Solve for x
    x = 4,803,187,932.89/78,385.80
  6. Step 6: Final answer
    x = 61,276.25

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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.