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Finding the Fourth Proportional to 76,661.76, 115,009.60 and 26,739.84

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Solution

The fourth proportional to 76,661.76, 115,009.60 and 26,739.84 is: 40,115.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,661.76 : 115,009.60 = 26,739.84 : x
  2. Step 2: Convert to fraction form
    76,661.76/115,009.60 = 26,739.84/x
  3. Step 3: Cross multiply
    76,661.76x = 115,009.60 × 26,739.84
  4. Step 4: Simplify right side
    76,661.76x = 3,075,338,302.46
  5. Step 5: Solve for x
    x = 3,075,338,302.46/76,661.76
  6. Step 6: Final answer
    x = 40,115.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.