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Finding the Fourth Proportional to 76,504.52, 105,546.74 and 56,409.08

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Solution

The fourth proportional to 76,504.52, 105,546.74 and 56,409.08 is: 77,822.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,504.52 : 105,546.74 = 56,409.08 : x
  2. Step 2: Convert to fraction form
    76,504.52/105,546.74 = 56,409.08/x
  3. Step 3: Cross multiply
    76,504.52x = 105,546.74 × 56,409.08
  4. Step 4: Simplify right side
    76,504.52x = 5,953,794,500.40
  5. Step 5: Solve for x
    x = 5,953,794,500.40/76,504.52
  6. Step 6: Final answer
    x = 77,822.78

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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.