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Finding the Fourth Proportional to 76,259.44, 105,146.52 and 65,630.80

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Solution

The fourth proportional to 76,259.44, 105,146.52 and 65,630.80 is: 90,491.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,259.44 : 105,146.52 = 65,630.80 : x
  2. Step 2: Convert to fraction form
    76,259.44/105,146.52 = 65,630.80/x
  3. Step 3: Cross multiply
    76,259.44x = 105,146.52 × 65,630.80
  4. Step 4: Simplify right side
    76,259.44x = 6,900,850,224.82
  5. Step 5: Solve for x
    x = 6,900,850,224.82/76,259.44
  6. Step 6: Final answer
    x = 90,491.75

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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.