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Finding the Fourth Proportional to 76,661.44, 105,794.84 and 42,207.22

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Solution

The fourth proportional to 76,661.44, 105,794.84 and 42,207.22 is: 58,247.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,661.44 : 105,794.84 = 42,207.22 : x
  2. Step 2: Convert to fraction form
    76,661.44/105,794.84 = 42,207.22/x
  3. Step 3: Cross multiply
    76,661.44x = 105,794.84 × 42,207.22
  4. Step 4: Simplify right side
    76,661.44x = 4,465,306,294.63
  5. Step 5: Solve for x
    x = 4,465,306,294.63/76,661.44
  6. Step 6: Final answer
    x = 58,247.10

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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.