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Finding the Fourth Proportional to 78,482.88, 108,305.56 and 58,429.44

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Solution

The fourth proportional to 78,482.88, 108,305.56 and 58,429.44 is: 80,632.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,482.88 : 108,305.56 = 58,429.44 : x
  2. Step 2: Convert to fraction form
    78,482.88/108,305.56 = 58,429.44/x
  3. Step 3: Cross multiply
    78,482.88x = 108,305.56 × 58,429.44
  4. Step 4: Simplify right side
    78,482.88x = 6,328,233,219.69
  5. Step 5: Solve for x
    x = 6,328,233,219.69/78,482.88
  6. Step 6: Final answer
    x = 80,632.02

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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.