Home / 76,655.13-105,785.69-43,121.13

Finding the Fourth Proportional to 76,655.13, 105,785.69 and 43,121.13

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Solution

The fourth proportional to 76,655.13, 105,785.69 and 43,121.13 is: 59,508.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,655.13 : 105,785.69 = 43,121.13 : x
  2. Step 2: Convert to fraction form
    76,655.13/105,785.69 = 43,121.13/x
  3. Step 3: Cross multiply
    76,655.13x = 105,785.69 × 43,121.13
  4. Step 4: Simplify right side
    76,655.13x = 4,561,598,490.63
  5. Step 5: Solve for x
    x = 4,561,598,490.63/76,655.13
  6. Step 6: Final answer
    x = 59,508.07

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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.