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Finding the Fourth Proportional to 76,327.52, 105,384.21 and 47,690.87

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Solution

The fourth proportional to 76,327.52, 105,384.21 and 47,690.87 is: 65,846.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,327.52 : 105,384.21 = 47,690.87 : x
  2. Step 2: Convert to fraction form
    76,327.52/105,384.21 = 47,690.87/x
  3. Step 3: Cross multiply
    76,327.52x = 105,384.21 × 47,690.87
  4. Step 4: Simplify right side
    76,327.52x = 5,025,864,659.16
  5. Step 5: Solve for x
    x = 5,025,864,659.16/76,327.52
  6. Step 6: Final answer
    x = 65,846.04

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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.