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Finding the Fourth Proportional to 76,009.65, 113,457.84 and 67,031.79

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Solution

The fourth proportional to 76,009.65, 113,457.84 and 67,031.79 is: 100,056.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,009.65 : 113,457.84 = 67,031.79 : x
  2. Step 2: Convert to fraction form
    76,009.65/113,457.84 = 67,031.79/x
  3. Step 3: Cross multiply
    76,009.65x = 113,457.84 × 67,031.79
  4. Step 4: Simplify right side
    76,009.65x = 7,605,282,104.73
  5. Step 5: Solve for x
    x = 7,605,282,104.73/76,009.65
  6. Step 6: Final answer
    x = 100,056.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.