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Finding the Fourth Proportional to 76,165.92, 105,120.58 and 47,490.26

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Solution

The fourth proportional to 76,165.92, 105,120.58 and 47,490.26 is: 65,543.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,165.92 : 105,120.58 = 47,490.26 : x
  2. Step 2: Convert to fraction form
    76,165.92/105,120.58 = 47,490.26/x
  3. Step 3: Cross multiply
    76,165.92x = 105,120.58 × 47,490.26
  4. Step 4: Simplify right side
    76,165.92x = 4,992,203,675.55
  5. Step 5: Solve for x
    x = 4,992,203,675.55/76,165.92
  6. Step 6: Final answer
    x = 65,543.80

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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.