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Finding the Fourth Proportional to 76,589.62, 105,703.17 and 43,055.62

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Solution

The fourth proportional to 76,589.62, 105,703.17 and 43,055.62 is: 59,422.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,589.62 : 105,703.17 = 43,055.62 : x
  2. Step 2: Convert to fraction form
    76,589.62/105,703.17 = 43,055.62/x
  3. Step 3: Cross multiply
    76,589.62x = 105,703.17 × 43,055.62
  4. Step 4: Simplify right side
    76,589.62x = 4,551,115,520.32
  5. Step 5: Solve for x
    x = 4,551,115,520.32/76,589.62
  6. Step 6: Final answer
    x = 59,422.09

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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.